./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-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_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/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_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/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_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/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 8639f60502701b783590428cddba5bf44f8c35f715b0b6bf93574efbde24283f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:53:56,727 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:53:56,830 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:53:56,843 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:53:56,843 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:53:56,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:53:56,890 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:53:56,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:53:56,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:53:56,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:53:56,891 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:53:56,891 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:53:56,892 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:53:56,892 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:53:56,892 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:53:56,893 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:53:56,894 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:53:56,894 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:53:56,894 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:53:56,894 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:53:56,894 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:53:56,894 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:53:56,895 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:53:56,895 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:53:56,895 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:53:56,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:53:56,895 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:53:56,895 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:53:56,895 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:53:56,895 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:53:56,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:53:56,896 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:53:56,896 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:53:56,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:53:56,896 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:53:56,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:53:56,896 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:53:56,896 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:53:56,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:53:56,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:53:56,897 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:53:56,897 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:53:56,897 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:53:56,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:53:56,897 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:53:56,897 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:53:56,897 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:53:56,897 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_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/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 -> 8639f60502701b783590428cddba5bf44f8c35f715b0b6bf93574efbde24283f [2024-11-14 04:53:57,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:53:57,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:53:57,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:53:57,281 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:53:57,281 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:53:57,283 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c Unable to find full path for "g++" [2024-11-14 04:53:59,606 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:53:59,954 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:53:59,955 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c [2024-11-14 04:53:59,970 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/data/36dbde9f9/070ee46ef23c489dae62cff65c546bb0/FLAGb6170bd24 [2024-11-14 04:53:59,997 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/data/36dbde9f9/070ee46ef23c489dae62cff65c546bb0 [2024-11-14 04:54:00,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:54:00,002 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:54:00,005 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:54:00,006 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:54:00,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:54:00,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:53:59" (1/1) ... [2024-11-14 04:54:00,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d8855cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:00, skipping insertion in model container [2024-11-14 04:54:00,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:53:59" (1/1) ... [2024-11-14 04:54:00,046 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:54:00,275 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_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c[2334,2347] [2024-11-14 04:54:00,293 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_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c[3766,3779] [2024-11-14 04:54:00,301 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_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c[5193,5206] [2024-11-14 04:54:00,308 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_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c[7003,7016] [2024-11-14 04:54:00,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:54:00,329 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:54:00,349 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_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c[2334,2347] [2024-11-14 04:54:00,354 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_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c[3766,3779] [2024-11-14 04:54:00,357 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_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c[5193,5206] [2024-11-14 04:54:00,362 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_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c[7003,7016] [2024-11-14 04:54:00,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:54:00,382 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:54:00,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:00 WrapperNode [2024-11-14 04:54:00,383 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:54:00,384 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:54:00,384 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:54:00,384 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:54:00,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:00" (1/1) ... [2024-11-14 04:54:00,400 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:00" (1/1) ... [2024-11-14 04:54:00,424 INFO L138 Inliner]: procedures = 16, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 163 [2024-11-14 04:54:00,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:54:00,426 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:54:00,426 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:54:00,426 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:54:00,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:00" (1/1) ... [2024-11-14 04:54:00,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:00" (1/1) ... [2024-11-14 04:54:00,438 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:00" (1/1) ... [2024-11-14 04:54:00,438 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:00" (1/1) ... [2024-11-14 04:54:00,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:00" (1/1) ... [2024-11-14 04:54:00,450 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:00" (1/1) ... [2024-11-14 04:54:00,451 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:00" (1/1) ... [2024-11-14 04:54:00,453 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:00" (1/1) ... [2024-11-14 04:54:00,455 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:54:00,456 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:54:00,456 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:54:00,456 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:54:00,458 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:00" (1/1) ... [2024-11-14 04:54:00,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:54:00,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:54:00,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:54:00,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:54:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:54:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:54:00,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 04:54:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 04:54:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_20_to_22_0 [2024-11-14 04:54:00,545 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_20_to_22_0 [2024-11-14 04:54:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:54:00,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:54:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 04:54:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:54:00,661 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:54:00,664 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:54:01,009 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-14 04:54:01,009 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:54:01,036 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:54:01,036 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 04:54:01,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:54:01 BoogieIcfgContainer [2024-11-14 04:54:01,037 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:54:01,040 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:54:01,040 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:54:01,045 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:54:01,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:53:59" (1/3) ... [2024-11-14 04:54:01,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d982b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:54:01, skipping insertion in model container [2024-11-14 04:54:01,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:00" (2/3) ... [2024-11-14 04:54:01,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d982b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:54:01, skipping insertion in model container [2024-11-14 04:54:01,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:54:01" (3/3) ... [2024-11-14 04:54:01,048 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_simple_array_index_value_4.i.v+lhb-reducer.c [2024-11-14 04:54:01,066 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:54:01,069 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_simple_array_index_value_4.i.v+lhb-reducer.c that has 2 procedures, 42 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2024-11-14 04:54:01,154 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:54:01,173 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;@33cc73ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:54:01,173 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-14 04:54:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 39 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:54:01,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 04:54:01,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:54:01,190 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:54:01,191 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-14 04:54:01,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:54:01,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1548479572, now seen corresponding path program 1 times [2024-11-14 04:54:01,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:54:01,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396161262] [2024-11-14 04:54:01,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:54:01,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:54:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:54:02,073 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 04:54:02,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:54:02,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396161262] [2024-11-14 04:54:02,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396161262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:54:02,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:54:02,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:54:02,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395940797] [2024-11-14 04:54:02,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:54:02,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:54:02,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:54:02,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:54:02,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:54:02,119 INFO L87 Difference]: Start difference. First operand has 42 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 39 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:54:02,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:54:02,256 INFO L93 Difference]: Finished difference Result 79 states and 114 transitions. [2024-11-14 04:54:02,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:54:02,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-14 04:54:02,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:54:02,269 INFO L225 Difference]: With dead ends: 79 [2024-11-14 04:54:02,270 INFO L226 Difference]: Without dead ends: 41 [2024-11-14 04:54:02,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:54:02,279 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 1 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:54:02,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 184 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:54:02,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-14 04:54:02,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-14 04:54:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 37 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:54:02,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-11-14 04:54:02,340 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 14 [2024-11-14 04:54:02,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:54:02,341 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-11-14 04:54:02,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:54:02,341 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-11-14 04:54:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 04:54:02,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:54:02,345 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:54:02,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:54:02,345 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-14 04:54:02,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:54:02,346 INFO L85 PathProgramCache]: Analyzing trace with hash -33413912, now seen corresponding path program 1 times [2024-11-14 04:54:02,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:54:02,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681481738] [2024-11-14 04:54:02,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:54:02,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:54:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:54:02,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:54:02,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:54:02,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681481738] [2024-11-14 04:54:02,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681481738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:54:02,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:54:02,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:54:02,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948311173] [2024-11-14 04:54:02,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:54:02,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:54:02,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:54:02,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:54:02,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:54:02,614 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:54:02,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:54:02,631 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2024-11-14 04:54:02,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:54:02,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-14 04:54:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:54:02,632 INFO L225 Difference]: With dead ends: 48 [2024-11-14 04:54:02,633 INFO L226 Difference]: Without dead ends: 38 [2024-11-14 04:54:02,633 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 04:54:02,634 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 11 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:54:02,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 65 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:54:02,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-14 04:54:02,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-14 04:54:02,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 32 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:54:02,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2024-11-14 04:54:02,641 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 19 [2024-11-14 04:54:02,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:54:02,642 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2024-11-14 04:54:02,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:54:02,642 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2024-11-14 04:54:02,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 04:54:02,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:54:02,643 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:54:02,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:54:02,644 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-14 04:54:02,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:54:02,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1021068459, now seen corresponding path program 1 times [2024-11-14 04:54:02,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:54:02,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146365379] [2024-11-14 04:54:02,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:54:02,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:54:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:54:02,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:54:02,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:54:02,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146365379] [2024-11-14 04:54:02,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146365379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:54:02,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:54:02,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:54:02,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237480686] [2024-11-14 04:54:02,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:54:02,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:54:02,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:54:02,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:54:02,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:54:02,715 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:54:02,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:54:02,782 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2024-11-14 04:54:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:54:02,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-14 04:54:02,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:54:02,785 INFO L225 Difference]: With dead ends: 64 [2024-11-14 04:54:02,785 INFO L226 Difference]: Without dead ends: 43 [2024-11-14 04:54:02,786 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 04:54:02,787 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:54:02,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 53 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:54:02,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-14 04:54:02,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2024-11-14 04:54:02,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 32 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:54:02,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-14 04:54:02,802 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 20 [2024-11-14 04:54:02,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:54:02,802 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-14 04:54:02,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:54:02,803 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-14 04:54:02,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 04:54:02,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:54:02,804 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:54:02,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:54:02,804 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-14 04:54:02,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:54:02,805 INFO L85 PathProgramCache]: Analyzing trace with hash 951625638, now seen corresponding path program 1 times [2024-11-14 04:54:02,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:54:02,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738147944] [2024-11-14 04:54:02,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:54:02,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:54:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:54:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:54:02,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:54:02,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738147944] [2024-11-14 04:54:02,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738147944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:54:02,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:54:02,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:54:02,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447552440] [2024-11-14 04:54:02,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:54:02,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:54:02,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:54:02,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:54:02,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:54:02,927 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:54:02,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:54:02,976 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2024-11-14 04:54:02,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:54:02,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-14 04:54:02,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:54:02,978 INFO L225 Difference]: With dead ends: 40 [2024-11-14 04:54:02,978 INFO L226 Difference]: Without dead ends: 38 [2024-11-14 04:54:02,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:54:02,979 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 1 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:54:02,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 107 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:54:02,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-14 04:54:02,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-14 04:54:02,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 34 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:54:02,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2024-11-14 04:54:02,986 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 20 [2024-11-14 04:54:02,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:54:02,986 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2024-11-14 04:54:02,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:54:02,986 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2024-11-14 04:54:02,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 04:54:02,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:54:02,987 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:54:02,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:54:02,987 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-14 04:54:02,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:54:02,988 INFO L85 PathProgramCache]: Analyzing trace with hash -501460582, now seen corresponding path program 1 times [2024-11-14 04:54:02,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:54:02,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044054919] [2024-11-14 04:54:02,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:54:02,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:54:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:54:03,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:54:03,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:54:03,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044054919] [2024-11-14 04:54:03,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044054919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:54:03,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:54:03,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:54:03,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144033878] [2024-11-14 04:54:03,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:54:03,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:54:03,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:54:03,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:54:03,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:54:03,077 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:54:03,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:54:03,119 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2024-11-14 04:54:03,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:54:03,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-14 04:54:03,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:54:03,121 INFO L225 Difference]: With dead ends: 60 [2024-11-14 04:54:03,121 INFO L226 Difference]: Without dead ends: 39 [2024-11-14 04:54:03,122 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 04:54:03,123 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 8 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:54:03,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 51 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:54:03,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-14 04:54:03,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2024-11-14 04:54:03,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 29 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:54:03,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-11-14 04:54:03,128 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 21 [2024-11-14 04:54:03,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:54:03,129 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-11-14 04:54:03,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:54:03,129 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-11-14 04:54:03,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 04:54:03,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:54:03,130 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:54:03,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 04:54:03,130 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-14 04:54:03,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:54:03,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1077469414, now seen corresponding path program 1 times [2024-11-14 04:54:03,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:54:03,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068427191] [2024-11-14 04:54:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:54:03,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:54:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:54:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:54:04,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:54:04,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068427191] [2024-11-14 04:54:04,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068427191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:54:04,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557147081] [2024-11-14 04:54:04,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:54:04,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:54:04,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:54:04,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:54:04,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:54:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:54:04,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-14 04:54:04,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:54:04,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 04:54:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:54:06,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:54:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:54:10,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557147081] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:54:10,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1005969787] [2024-11-14 04:54:10,284 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2024-11-14 04:54:10,285 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:54:10,290 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 04:54:10,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:54:10,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 22 [2024-11-14 04:54:10,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383735703] [2024-11-14 04:54:10,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:54:10,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-14 04:54:10,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:54:10,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-14 04:54:10,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=422, Unknown=1, NotChecked=0, Total=506 [2024-11-14 04:54:10,298 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 23 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 04:54:16,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:54:16,173 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2024-11-14 04:54:16,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 04:54:16,174 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 26 [2024-11-14 04:54:16,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:54:16,175 INFO L225 Difference]: With dead ends: 59 [2024-11-14 04:54:16,175 INFO L226 Difference]: Without dead ends: 35 [2024-11-14 04:54:16,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=123, Invalid=578, Unknown=1, NotChecked=0, Total=702 [2024-11-14 04:54:16,177 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:54:16,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 338 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 04:54:16,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-14 04:54:16,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-14 04:54:16,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 30 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 04:54:16,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2024-11-14 04:54:16,188 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 26 [2024-11-14 04:54:16,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:54:16,188 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2024-11-14 04:54:16,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 04:54:16,189 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2024-11-14 04:54:16,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 04:54:16,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:54:16,190 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:54:16,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:54:16,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:54:16,391 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-14 04:54:16,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:54:16,391 INFO L85 PathProgramCache]: Analyzing trace with hash -119142706, now seen corresponding path program 2 times [2024-11-14 04:54:16,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:54:16,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788162256] [2024-11-14 04:54:16,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:54:16,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:54:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:54:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:54:17,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:54:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788162256] [2024-11-14 04:54:17,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788162256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:54:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113004839] [2024-11-14 04:54:17,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:54:17,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:54:17,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:54:17,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:54:17,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:54:18,011 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-14 04:54:18,011 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:54:18,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 04:54:18,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:54:19,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:54:19,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:54:19,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:54:19,036 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 04:54:19,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:54:19,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:54:19,043 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 04:54:19,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:54:19,068 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 04:54:19,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 303 treesize of output 149 [2024-11-14 04:54:19,328 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 04:54:19,330 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:54:19,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113004839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:54:19,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:54:19,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 20 [2024-11-14 04:54:19,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726317895] [2024-11-14 04:54:19,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:54:19,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 04:54:19,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:54:19,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 04:54:19,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:54:19,334 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:54:19,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:54:19,784 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2024-11-14 04:54:19,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 04:54:19,785 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2024-11-14 04:54:19,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:54:19,786 INFO L225 Difference]: With dead ends: 51 [2024-11-14 04:54:19,786 INFO L226 Difference]: Without dead ends: 30 [2024-11-14 04:54:19,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2024-11-14 04:54:19,788 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 25 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:54:19,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 65 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:54:19,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-14 04:54:19,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-11-14 04:54:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 04:54:19,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2024-11-14 04:54:19,797 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 31 [2024-11-14 04:54:19,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:54:19,798 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2024-11-14 04:54:19,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:54:19,798 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2024-11-14 04:54:19,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 04:54:19,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:54:19,799 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:54:19,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 04:54:19,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:54:19,999 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-14 04:54:20,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:54:20,000 INFO L85 PathProgramCache]: Analyzing trace with hash -78907711, now seen corresponding path program 1 times [2024-11-14 04:54:20,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:54:20,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055856161] [2024-11-14 04:54:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:54:20,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:54:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:54:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 04:54:20,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:54:20,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055856161] [2024-11-14 04:54:20,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055856161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:54:20,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:54:20,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:54:20,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789081790] [2024-11-14 04:54:20,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:54:20,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:54:20,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:54:20,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:54:20,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:54:20,147 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:54:20,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:54:20,208 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-11-14 04:54:20,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:54:20,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-11-14 04:54:20,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:54:20,209 INFO L225 Difference]: With dead ends: 28 [2024-11-14 04:54:20,209 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 04:54:20,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:54:20,210 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:54:20,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 91 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:54:20,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 04:54:20,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 04:54:20,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:54:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 04:54:20,215 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2024-11-14 04:54:20,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:54:20,215 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 04:54:20,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:54:20,216 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 04:54:20,216 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 04:54:20,219 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-14 04:54:20,220 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-14 04:54:20,220 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-14 04:54:20,220 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-14 04:54:20,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 04:54:20,224 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-11-14 04:54:20,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 04:54:28,598 WARN L286 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 83 DAG size of output: 66 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-11-14 04:54:28,604 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:54:28,613 WARN L162 FloydHoareUtils]: Requires clause for func_to_recursive_line_20_to_22_0 contained old-variable. Original clause: (= |#memory_int| |old(#memory_int)|) Eliminated clause: true [2024-11-14 04:54:28,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:54:28 BoogieIcfgContainer [2024-11-14 04:54:28,624 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:54:28,625 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:54:28,625 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:54:28,625 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:54:28,626 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:54:01" (3/4) ... [2024-11-14 04:54:28,628 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 04:54:28,633 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_20_to_22_0 [2024-11-14 04:54:28,639 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2024-11-14 04:54:28,639 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-14 04:54:28,639 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-14 04:54:28,640 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 04:54:28,774 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 04:54:28,775 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 04:54:28,775 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:54:28,777 INFO L158 Benchmark]: Toolchain (without parser) took 28774.25ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 117.7MB in the beginning and 189.1MB in the end (delta: -71.4MB). Peak memory consumption was 123.0MB. Max. memory is 16.1GB. [2024-11-14 04:54:28,777 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 142.6MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:54:28,777 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.20ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 105.2MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:54:28,778 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.41ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 103.6MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:54:28,778 INFO L158 Benchmark]: Boogie Preprocessor took 29.63ms. Allocated memory is still 142.6MB. Free memory was 103.6MB in the beginning and 102.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:54:28,779 INFO L158 Benchmark]: RCFGBuilder took 580.54ms. Allocated memory is still 142.6MB. Free memory was 102.4MB in the beginning and 85.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:54:28,780 INFO L158 Benchmark]: TraceAbstraction took 27584.35ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 84.9MB in the beginning and 76.0MB in the end (delta: 8.9MB). Peak memory consumption was 81.0MB. Max. memory is 16.1GB. [2024-11-14 04:54:28,781 INFO L158 Benchmark]: Witness Printer took 150.62ms. Allocated memory is still 218.1MB. Free memory was 76.0MB in the beginning and 189.1MB in the end (delta: -113.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:54:28,783 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 142.6MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 378.20ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 105.2MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.41ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 103.6MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.63ms. Allocated memory is still 142.6MB. Free memory was 103.6MB in the beginning and 102.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 580.54ms. Allocated memory is still 142.6MB. Free memory was 102.4MB in the beginning and 85.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 27584.35ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 84.9MB in the beginning and 76.0MB in the end (delta: 8.9MB). Peak memory consumption was 81.0MB. Max. memory is 16.1GB. * Witness Printer took 150.62ms. Allocated memory is still 218.1MB. Free memory was 76.0MB in the beginning and 189.1MB in the end (delta: -113.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 88]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 125]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 167]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 233]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 42 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 19.1s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 73 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73 mSDsluCounter, 954 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 690 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 271 IncrementalHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 264 mSDtfsCounter, 271 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 17 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 240 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 255 ConstructedInterpolants, 5 QuantifiedInterpolants, 2936 SizeOfPredicates, 17 NumberOfNonLiveVariables, 272 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 49/67 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - ProcedureContractResult [Line: 36]: Procedure Contract for func_to_recursive_line_20_to_22_0 Derived contract for procedure func_to_recursive_line_20_to_22_0. Ensures: (((__return_main == \old(__return_main)) && (__tmp_155_0 == \old(__tmp_155_0))) && (__return_136 == \old(__return_136))) RESULT: Ultimate proved your program to be correct! [2024-11-14 04:54:28,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e42d4eb-ff0c-4e6a-ab03-1832d7f3d46c/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE