./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:16:59,009 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:16:59,105 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 07:16:59,110 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:16:59,111 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:16:59,147 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:16:59,148 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:16:59,148 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:16:59,149 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:16:59,149 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:16:59,149 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:16:59,151 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:16:59,151 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:16:59,153 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:16:59,153 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:16:59,153 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:16:59,154 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:16:59,154 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:16:59,154 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:16:59,155 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:16:59,155 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:16:59,159 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:16:59,159 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:16:59,160 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:16:59,160 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:16:59,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:16:59,161 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:16:59,161 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:16:59,161 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:16:59,161 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:16:59,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:16:59,162 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:16:59,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:16:59,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:16:59,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:16:59,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:16:59,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:16:59,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:16:59,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:16:59,164 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:16:59,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:16:59,164 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:16:59,164 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:16:59,165 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:16:59,165 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 [2024-11-09 07:16:59,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:16:59,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:16:59,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:16:59,473 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:16:59,474 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:16:59,475 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i Unable to find full path for "g++" [2024-11-09 07:17:01,494 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:17:02,099 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:17:02,100 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2024-11-09 07:17:02,147 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/data/1b831b761/02032dc2990e4af4958d7e68a8a7fc45/FLAG3a6edae38 [2024-11-09 07:17:02,549 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/data/1b831b761/02032dc2990e4af4958d7e68a8a7fc45 [2024-11-09 07:17:02,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:17:02,553 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:17:02,554 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:17:02,555 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:17:02,561 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:17:02,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:17:02" (1/1) ... [2024-11-09 07:17:02,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46971733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:17:02, skipping insertion in model container [2024-11-09 07:17:02,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:17:02" (1/1) ... [2024-11-09 07:17:02,722 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:17:05,122 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_98a03727-2adf-4c1d-9d93-7fc9b4246e69/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2024-11-09 07:17:05,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:17:05,254 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:17:05,731 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_98a03727-2adf-4c1d-9d93-7fc9b4246e69/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2024-11-09 07:17:05,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:17:05,904 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:17:05,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:17:05 WrapperNode [2024-11-09 07:17:05,905 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:17:05,906 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:17:05,906 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:17:05,906 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:17:05,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:17:05" (1/1) ... [2024-11-09 07:17:06,067 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:17:05" (1/1) ... [2024-11-09 07:17:06,438 INFO L138 Inliner]: procedures = 251, calls = 4784, calls flagged for inlining = 118, calls inlined = 113, statements flattened = 9168 [2024-11-09 07:17:06,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:17:06,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:17:06,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:17:06,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:17:06,451 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:17:05" (1/1) ... [2024-11-09 07:17:06,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:17:05" (1/1) ... [2024-11-09 07:17:06,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:17:05" (1/1) ... [2024-11-09 07:17:06,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:17:05" (1/1) ... [2024-11-09 07:17:07,062 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:17:05" (1/1) ... [2024-11-09 07:17:07,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:17:05" (1/1) ... [2024-11-09 07:17:07,144 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:17:05" (1/1) ... [2024-11-09 07:17:07,174 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:17:05" (1/1) ... [2024-11-09 07:17:07,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:17:07,240 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:17:07,240 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:17:07,241 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:17:07,242 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:17:05" (1/1) ... [2024-11-09 07:17:07,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:17:07,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:17:07,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:17:07,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:17:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_origin [2024-11-09 07:17:07,310 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_origin [2024-11-09 07:17:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure con_copy_unimap [2024-11-09 07:17:07,310 INFO L138 BoogieDeclarations]: Found implementation of procedure con_copy_unimap [2024-11-09 07:17:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_exit [2024-11-09 07:17:07,310 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_exit [2024-11-09 07:17:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2024-11-09 07:17:07,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2024-11-09 07:17:07,312 INFO L130 BoogieDeclarations]: Found specification of procedure con_is_bound [2024-11-09 07:17:07,312 INFO L138 BoogieDeclarations]: Found implementation of procedure con_is_bound [2024-11-09 07:17:07,312 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove [2024-11-09 07:17:07,312 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove [2024-11-09 07:17:07,312 INFO L130 BoogieDeclarations]: Found specification of procedure var_to_display [2024-11-09 07:17:07,312 INFO L138 BoogieDeclarations]: Found implementation of procedure var_to_display [2024-11-09 07:17:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure do_fbcon_takeover [2024-11-09 07:17:07,313 INFO L138 BoogieDeclarations]: Found implementation of procedure do_fbcon_takeover [2024-11-09 07:17:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-09 07:17:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 07:17:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-09 07:17:07,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-09 07:17:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-09 07:17:07,313 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-09 07:17:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-09 07:17:07,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-09 07:17:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure con2fb_release_oldinfo [2024-11-09 07:17:07,314 INFO L138 BoogieDeclarations]: Found implementation of procedure con2fb_release_oldinfo [2024-11-09 07:17:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure scr_memcpyw [2024-11-09 07:17:07,314 INFO L138 BoogieDeclarations]: Found implementation of procedure scr_memcpyw [2024-11-09 07:17:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2024-11-09 07:17:07,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2024-11-09 07:17:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_cursor [2024-11-09 07:17:07,314 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_cursor [2024-11-09 07:17:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure get_default_font [2024-11-09 07:17:07,314 INFO L138 BoogieDeclarations]: Found implementation of procedure get_default_font [2024-11-09 07:17:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2024-11-09 07:17:07,315 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2024-11-09 07:17:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_putcs [2024-11-09 07:17:07,315 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_putcs [2024-11-09 07:17:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure get_color [2024-11-09 07:17:07,315 INFO L138 BoogieDeclarations]: Found implementation of procedure get_color [2024-11-09 07:17:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure scr_memsetw [2024-11-09 07:17:07,315 INFO L138 BoogieDeclarations]: Found implementation of procedure scr_memsetw [2024-11-09 07:17:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure do_unregister_con_driver [2024-11-09 07:17:07,315 INFO L138 BoogieDeclarations]: Found implementation of procedure do_unregister_con_driver [2024-11-09 07:17:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-09 07:17:07,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-09 07:17:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_get_font [2024-11-09 07:17:07,316 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_get_font [2024-11-09 07:17:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure real_y [2024-11-09 07:17:07,316 INFO L138 BoogieDeclarations]: Found implementation of procedure real_y [2024-11-09 07:17:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_update_softback [2024-11-09 07:17:07,316 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_update_softback [2024-11-09 07:17:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 07:17:07,317 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 07:17:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 07:17:07,317 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 07:17:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure update_region [2024-11-09 07:17:07,317 INFO L138 BoogieDeclarations]: Found implementation of procedure update_region [2024-11-09 07:17:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure fb_flashcursor [2024-11-09 07:17:07,318 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_flashcursor [2024-11-09 07:17:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure find_font [2024-11-09 07:17:07,318 INFO L138 BoogieDeclarations]: Found implementation of procedure find_font [2024-11-09 07:17:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 07:17:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_scrolldelta [2024-11-09 07:17:07,319 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_scrolldelta [2024-11-09 07:17:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_disp [2024-11-09 07:17:07,319 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_disp [2024-11-09 07:17:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 07:17:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_clear_margins [2024-11-09 07:17:07,320 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_clear_margins [2024-11-09 07:17:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2024-11-09 07:17:07,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2024-11-09 07:17:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure display_to_var [2024-11-09 07:17:07,320 INFO L138 BoogieDeclarations]: Found implementation of procedure display_to_var [2024-11-09 07:17:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 07:17:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 07:17:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-09 07:17:07,321 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-09 07:17:07,321 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~X~int~X~int~TO~VOID [2024-11-09 07:17:07,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~X~int~X~int~TO~VOID [2024-11-09 07:17:07,321 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2024-11-09 07:17:07,321 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2024-11-09 07:17:07,321 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2024-11-09 07:17:07,322 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2024-11-09 07:17:07,322 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2024-11-09 07:17:07,322 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2024-11-09 07:17:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_enter [2024-11-09 07:17:07,323 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_enter [2024-11-09 07:17:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_del_cursor_timer [2024-11-09 07:17:07,324 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_del_cursor_timer [2024-11-09 07:17:07,324 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw_move [2024-11-09 07:17:07,324 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw_move [2024-11-09 07:17:07,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-09 07:17:07,324 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2024-11-09 07:17:07,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2024-11-09 07:17:07,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 07:17:07,324 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_is_inactive [2024-11-09 07:17:07,324 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_is_inactive [2024-11-09 07:17:07,325 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_clear [2024-11-09 07:17:07,325 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_clear [2024-11-09 07:17:07,325 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_add_cursor_timer [2024-11-09 07:17:07,325 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_add_cursor_timer [2024-11-09 07:17:07,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 07:17:07,325 INFO L130 BoogieDeclarations]: Found specification of procedure fb_set_var [2024-11-09 07:17:07,325 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_set_var [2024-11-09 07:17:07,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2024-11-09 07:17:07,325 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2024-11-09 07:17:07,326 INFO L130 BoogieDeclarations]: Found specification of procedure set_blitting_type [2024-11-09 07:17:07,326 INFO L138 BoogieDeclarations]: Found implementation of procedure set_blitting_type [2024-11-09 07:17:07,326 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove_rec [2024-11-09 07:17:07,327 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove_rec [2024-11-09 07:17:07,327 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-09 07:17:07,327 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-09 07:17:07,327 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_palette [2024-11-09 07:17:07,327 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_palette [2024-11-09 07:17:07,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 07:17:07,328 INFO L130 BoogieDeclarations]: Found specification of procedure set_con2fb_map [2024-11-09 07:17:07,328 INFO L138 BoogieDeclarations]: Found implementation of procedure set_con2fb_map [2024-11-09 07:17:07,328 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_leave [2024-11-09 07:17:07,328 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_leave [2024-11-09 07:17:07,328 INFO L130 BoogieDeclarations]: Found specification of procedure console_conditional_schedule [2024-11-09 07:17:07,329 INFO L138 BoogieDeclarations]: Found implementation of procedure console_conditional_schedule [2024-11-09 07:17:07,329 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_copy_font [2024-11-09 07:17:07,329 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_copy_font [2024-11-09 07:17:07,329 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_do_set_font [2024-11-09 07:17:07,329 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_do_set_font [2024-11-09 07:17:07,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-09 07:17:07,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-09 07:17:07,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 07:17:07,329 INFO L130 BoogieDeclarations]: Found specification of procedure con2fb_acquire_newinfo [2024-11-09 07:17:07,329 INFO L138 BoogieDeclarations]: Found implementation of procedure con2fb_acquire_newinfo [2024-11-09 07:17:07,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-09 07:17:07,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-09 07:17:07,330 INFO L130 BoogieDeclarations]: Found specification of procedure fb_get_color_depth [2024-11-09 07:17:07,330 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_get_color_depth [2024-11-09 07:17:07,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:17:07,330 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_prepare_logo [2024-11-09 07:17:07,330 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_prepare_logo [2024-11-09 07:17:07,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 07:17:07,330 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw_blit [2024-11-09 07:17:07,331 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw_blit [2024-11-09 07:17:07,331 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2024-11-09 07:17:07,331 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2024-11-09 07:17:07,331 INFO L130 BoogieDeclarations]: Found specification of procedure fb_videomode_to_var [2024-11-09 07:17:07,331 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_videomode_to_var [2024-11-09 07:17:07,331 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~TO~VOID [2024-11-09 07:17:07,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~TO~VOID [2024-11-09 07:17:07,331 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2024-11-09 07:17:07,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2024-11-09 07:17:07,331 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2024-11-09 07:17:07,332 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2024-11-09 07:17:07,332 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_modechanged [2024-11-09 07:17:07,332 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_modechanged [2024-11-09 07:17:07,332 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2024-11-09 07:17:07,332 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2024-11-09 07:17:07,332 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_invert_region [2024-11-09 07:17:07,332 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_invert_region [2024-11-09 07:17:07,332 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_all_vcs [2024-11-09 07:17:07,332 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_all_vcs [2024-11-09 07:17:07,332 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw [2024-11-09 07:17:07,333 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw [2024-11-09 07:17:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure updatescrollmode [2024-11-09 07:17:07,333 INFO L138 BoogieDeclarations]: Found implementation of procedure updatescrollmode [2024-11-09 07:17:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_switch [2024-11-09 07:17:07,333 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_switch [2024-11-09 07:17:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure vc_resize [2024-11-09 07:17:07,333 INFO L138 BoogieDeclarations]: Found implementation of procedure vc_resize [2024-11-09 07:17:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 07:17:07,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 07:17:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure redraw_screen [2024-11-09 07:17:07,333 INFO L138 BoogieDeclarations]: Found implementation of procedure redraw_screen [2024-11-09 07:17:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:17:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure search_fb_in_map [2024-11-09 07:17:07,336 INFO L138 BoogieDeclarations]: Found implementation of procedure search_fb_in_map [2024-11-09 07:17:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure con_set_default_unimap [2024-11-09 07:17:07,336 INFO L138 BoogieDeclarations]: Found implementation of procedure con_set_default_unimap [2024-11-09 07:17:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2024-11-09 07:17:07,336 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2024-11-09 07:17:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:17:07,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:17:07,337 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2024-11-09 07:17:07,337 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2024-11-09 07:17:08,322 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:17:08,325 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:17:11,012 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-09 07:17:40,845 INFO L? ?]: Removed 2549 outVars from TransFormulas that were not future-live. [2024-11-09 07:17:40,845 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:17:45,701 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:17:45,701 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 07:17:45,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:17:45 BoogieIcfgContainer [2024-11-09 07:17:45,701 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:17:45,703 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:17:45,704 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:17:45,708 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:17:45,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:17:02" (1/3) ... [2024-11-09 07:17:45,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715445d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:17:45, skipping insertion in model container [2024-11-09 07:17:45,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:17:05" (2/3) ... [2024-11-09 07:17:45,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715445d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:17:45, skipping insertion in model container [2024-11-09 07:17:45,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:17:45" (3/3) ... [2024-11-09 07:17:45,713 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2024-11-09 07:17:45,733 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:17:45,733 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:17:45,862 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:17:45,869 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;@6d9ccccc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:17:45,870 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:17:45,883 INFO L276 IsEmpty]: Start isEmpty. Operand has 1475 states, 987 states have (on average 1.4235055724417427) internal successors, (1405), 1044 states have internal predecessors, (1405), 404 states have call successors, (404), 83 states have call predecessors, (404), 82 states have return successors, (399), 383 states have call predecessors, (399), 399 states have call successors, (399) [2024-11-09 07:17:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2024-11-09 07:17:45,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:17:45,945 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:17:45,946 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:17:45,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:17:45,951 INFO L85 PathProgramCache]: Analyzing trace with hash 539299104, now seen corresponding path program 1 times [2024-11-09 07:17:45,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:17:45,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186619834] [2024-11-09 07:17:45,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:17:45,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:17:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:17:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2024-11-09 07:17:50,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:17:50,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186619834] [2024-11-09 07:17:50,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186619834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:17:50,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:17:50,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:17:50,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39387323] [2024-11-09 07:17:50,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:17:50,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:17:50,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:17:50,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:17:50,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:17:50,735 INFO L87 Difference]: Start difference. First operand has 1475 states, 987 states have (on average 1.4235055724417427) internal successors, (1405), 1044 states have internal predecessors, (1405), 404 states have call successors, (404), 83 states have call predecessors, (404), 82 states have return successors, (399), 383 states have call predecessors, (399), 399 states have call successors, (399) Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2024-11-09 07:17:52,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:17:54,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:17:57,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:18:00,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:03,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:07,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:18:09,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:18:12,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:14,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:18,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:20,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:20,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:18:20,360 INFO L93 Difference]: Finished difference Result 4186 states and 6305 transitions. [2024-11-09 07:18:20,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:18:20,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 433 [2024-11-09 07:18:20,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:18:20,416 INFO L225 Difference]: With dead ends: 4186 [2024-11-09 07:18:20,416 INFO L226 Difference]: Without dead ends: 2786 [2024-11-09 07:18:20,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:18:20,433 INFO L432 NwaCegarLoop]: 1954 mSDtfsCounter, 2025 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 3 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 3860 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:18:20,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2025 Valid, 3860 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 496 Invalid, 11 Unknown, 0 Unchecked, 29.3s Time] [2024-11-09 07:18:20,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2024-11-09 07:18:20,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2783. [2024-11-09 07:18:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 1888 states have (on average 1.427436440677966) internal successors, (2695), 1985 states have internal predecessors, (2695), 735 states have call successors, (735), 160 states have call predecessors, (735), 159 states have return successors, (733), 701 states have call predecessors, (733), 733 states have call successors, (733) [2024-11-09 07:18:20,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 4163 transitions. [2024-11-09 07:18:20,686 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 4163 transitions. Word has length 433 [2024-11-09 07:18:20,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:18:20,689 INFO L471 AbstractCegarLoop]: Abstraction has 2783 states and 4163 transitions. [2024-11-09 07:18:20,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2024-11-09 07:18:20,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 4163 transitions. [2024-11-09 07:18:20,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-11-09 07:18:20,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:18:20,706 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:18:20,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:18:20,707 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:18:20,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:18:20,707 INFO L85 PathProgramCache]: Analyzing trace with hash -90278528, now seen corresponding path program 1 times [2024-11-09 07:18:20,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:18:20,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767704531] [2024-11-09 07:18:20,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:18:20,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:18:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:18:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2024-11-09 07:18:23,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:18:23,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767704531] [2024-11-09 07:18:23,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767704531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:18:23,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:18:23,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:18:23,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326092029] [2024-11-09 07:18:23,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:18:23,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:18:23,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:18:23,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:18:23,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:18:23,940 INFO L87 Difference]: Start difference. First operand 2783 states and 4163 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-09 07:18:26,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:28,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:30,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:18:32,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:18:35,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:37,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:41,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:43,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:44,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:46,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:18:46,328 INFO L93 Difference]: Finished difference Result 5478 states and 8197 transitions. [2024-11-09 07:18:46,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:18:46,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 447 [2024-11-09 07:18:46,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:18:46,356 INFO L225 Difference]: With dead ends: 5478 [2024-11-09 07:18:46,357 INFO L226 Difference]: Without dead ends: 2784 [2024-11-09 07:18:46,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:18:46,369 INFO L432 NwaCegarLoop]: 1943 mSDtfsCounter, 0 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3883 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:18:46,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3883 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 492 Invalid, 8 Unknown, 0 Unchecked, 22.2s Time] [2024-11-09 07:18:46,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2024-11-09 07:18:46,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2784. [2024-11-09 07:18:46,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 1889 states have (on average 1.4272101641079937) internal successors, (2696), 1986 states have internal predecessors, (2696), 735 states have call successors, (735), 160 states have call predecessors, (735), 159 states have return successors, (733), 701 states have call predecessors, (733), 733 states have call successors, (733) [2024-11-09 07:18:46,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4164 transitions. [2024-11-09 07:18:46,507 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4164 transitions. Word has length 447 [2024-11-09 07:18:46,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:18:46,509 INFO L471 AbstractCegarLoop]: Abstraction has 2784 states and 4164 transitions. [2024-11-09 07:18:46,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-09 07:18:46,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4164 transitions. [2024-11-09 07:18:46,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2024-11-09 07:18:46,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:18:46,524 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:18:46,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:18:46,524 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:18:46,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:18:46,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1897285517, now seen corresponding path program 1 times [2024-11-09 07:18:46,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:18:46,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405645354] [2024-11-09 07:18:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:18:46,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:18:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:18:49,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2024-11-09 07:18:49,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:18:49,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405645354] [2024-11-09 07:18:49,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405645354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:18:49,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:18:49,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:18:49,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754049869] [2024-11-09 07:18:49,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:18:49,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:18:49,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:18:49,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:18:49,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:18:49,559 INFO L87 Difference]: Start difference. First operand 2784 states and 4164 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2024-11-09 07:18:51,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:54,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:57,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:18:59,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:19:02,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:19:04,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:19:05,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:19:08,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:19:10,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:19:12,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:19:13,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:13,347 INFO L93 Difference]: Finished difference Result 7027 states and 10406 transitions. [2024-11-09 07:19:13,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:19:13,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 446 [2024-11-09 07:19:13,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:13,379 INFO L225 Difference]: With dead ends: 7027 [2024-11-09 07:19:13,379 INFO L226 Difference]: Without dead ends: 4332 [2024-11-09 07:19:13,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:19:13,393 INFO L432 NwaCegarLoop]: 2053 mSDtfsCounter, 1293 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 2 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 3804 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:13,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 3804 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 563 Invalid, 9 Unknown, 0 Unchecked, 23.6s Time] [2024-11-09 07:19:13,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2024-11-09 07:19:13,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 4325. [2024-11-09 07:19:13,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4325 states, 2934 states have (on average 1.4229720518064077) internal successors, (4175), 3076 states have internal predecessors, (4175), 1096 states have call successors, (1096), 295 states have call predecessors, (1096), 294 states have return successors, (1094), 1051 states have call predecessors, (1094), 1094 states have call successors, (1094) [2024-11-09 07:19:13,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4325 states to 4325 states and 6365 transitions. [2024-11-09 07:19:13,607 INFO L78 Accepts]: Start accepts. Automaton has 4325 states and 6365 transitions. Word has length 446 [2024-11-09 07:19:13,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:13,608 INFO L471 AbstractCegarLoop]: Abstraction has 4325 states and 6365 transitions. [2024-11-09 07:19:13,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2024-11-09 07:19:13,609 INFO L276 IsEmpty]: Start isEmpty. Operand 4325 states and 6365 transitions. [2024-11-09 07:19:13,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2024-11-09 07:19:13,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:13,619 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:13,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:19:13,622 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:19:13,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:13,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1113773939, now seen corresponding path program 1 times [2024-11-09 07:19:13,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:13,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264166257] [2024-11-09 07:19:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:13,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:16,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2024-11-09 07:19:16,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:16,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264166257] [2024-11-09 07:19:16,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264166257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:19:16,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953670310] [2024-11-09 07:19:16,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:16,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:16,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:19:16,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:19:16,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:19:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:21,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 8122 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 07:19:21,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:19:21,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4208 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4208 trivial. 0 not checked. [2024-11-09 07:19:21,213 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:19:21,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953670310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:19:21,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:19:21,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 07:19:21,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375663822] [2024-11-09 07:19:21,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:19:21,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:19:21,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:21,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:19:21,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:19:21,217 INFO L87 Difference]: Start difference. First operand 4325 states and 6365 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-09 07:19:23,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:19:25,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:19:28,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:19:32,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:19:32,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:32,719 INFO L93 Difference]: Finished difference Result 7267 states and 10650 transitions. [2024-11-09 07:19:32,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:19:32,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 448 [2024-11-09 07:19:32,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:32,747 INFO L225 Difference]: With dead ends: 7267 [2024-11-09 07:19:32,748 INFO L226 Difference]: Without dead ends: 3039 [2024-11-09 07:19:32,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:19:32,768 INFO L432 NwaCegarLoop]: 1939 mSDtfsCounter, 2188 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2188 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:32,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2188 Valid, 1939 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 4 Unknown, 0 Unchecked, 11.4s Time] [2024-11-09 07:19:32,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2024-11-09 07:19:32,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 3037. [2024-11-09 07:19:32,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 2047 states have (on average 1.4132877381533953) internal successors, (2893), 2142 states have internal predecessors, (2893), 764 states have call successors, (764), 226 states have call predecessors, (764), 225 states have return successors, (762), 734 states have call predecessors, (762), 762 states have call successors, (762) [2024-11-09 07:19:32,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 4419 transitions. [2024-11-09 07:19:32,922 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 4419 transitions. Word has length 448 [2024-11-09 07:19:32,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:32,923 INFO L471 AbstractCegarLoop]: Abstraction has 3037 states and 4419 transitions. [2024-11-09 07:19:32,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-09 07:19:32,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 4419 transitions. [2024-11-09 07:19:32,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2024-11-09 07:19:32,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:32,935 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:32,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 07:19:33,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:33,137 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:19:33,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:33,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1432116628, now seen corresponding path program 1 times [2024-11-09 07:19:33,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:33,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394791379] [2024-11-09 07:19:33,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:33,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:36,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2024-11-09 07:19:36,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:36,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394791379] [2024-11-09 07:19:36,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394791379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:19:36,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:19:36,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:19:36,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463940886] [2024-11-09 07:19:36,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:19:36,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:19:36,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:36,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:19:36,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:19:36,046 INFO L87 Difference]: Start difference. First operand 3037 states and 4419 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-09 07:19:38,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:19:40,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:19:42,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:19:44,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:19:47,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:19:49,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:19:52,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:19:56,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:19:58,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:20:00,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:20:02,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:20:03,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:03,052 INFO L93 Difference]: Finished difference Result 7002 states and 10150 transitions. [2024-11-09 07:20:03,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:20:03,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 454 [2024-11-09 07:20:03,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:03,080 INFO L225 Difference]: With dead ends: 7002 [2024-11-09 07:20:03,081 INFO L226 Difference]: Without dead ends: 4062 [2024-11-09 07:20:03,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:20:03,094 INFO L432 NwaCegarLoop]: 3082 mSDtfsCounter, 1755 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 2 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1755 SdHoareTripleChecker+Valid, 4891 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:03,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1755 Valid, 4891 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 642 Invalid, 10 Unknown, 0 Unchecked, 26.8s Time] [2024-11-09 07:20:03,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2024-11-09 07:20:03,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 3931. [2024-11-09 07:20:03,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3931 states, 2643 states have (on average 1.4086265607264472) internal successors, (3723), 2772 states have internal predecessors, (3723), 990 states have call successors, (990), 298 states have call predecessors, (990), 297 states have return successors, (988), 943 states have call predecessors, (988), 988 states have call successors, (988) [2024-11-09 07:20:03,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3931 states to 3931 states and 5701 transitions. [2024-11-09 07:20:03,307 INFO L78 Accepts]: Start accepts. Automaton has 3931 states and 5701 transitions. Word has length 454 [2024-11-09 07:20:03,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:03,309 INFO L471 AbstractCegarLoop]: Abstraction has 3931 states and 5701 transitions. [2024-11-09 07:20:03,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-09 07:20:03,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3931 states and 5701 transitions. [2024-11-09 07:20:03,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2024-11-09 07:20:03,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:03,329 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:03,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 07:20:03,330 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:20:03,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:03,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1754577412, now seen corresponding path program 1 times [2024-11-09 07:20:03,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:20:03,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197545505] [2024-11-09 07:20:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:03,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:20:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:06,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4388 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4381 trivial. 0 not checked. [2024-11-09 07:20:06,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:20:06,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197545505] [2024-11-09 07:20:06,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197545505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:20:06,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782100291] [2024-11-09 07:20:06,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:06,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:20:06,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:20:06,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:20:06,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:20:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:11,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 8397 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 07:20:11,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4388 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 4218 trivial. 0 not checked. [2024-11-09 07:20:11,663 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:20:11,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782100291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:20:11,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:20:11,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 07:20:11,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017816303] [2024-11-09 07:20:11,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:20:11,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:20:11,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:20:11,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:20:11,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:20:11,667 INFO L87 Difference]: Start difference. First operand 3931 states and 5701 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2024-11-09 07:20:13,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:20:15,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:20:18,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:20:20,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:20:23,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:20:25,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:20:26,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:20:29,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:20:31,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:20:34,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:20:36,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:20:38,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:20:40,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:40,396 INFO L93 Difference]: Finished difference Result 8802 states and 12634 transitions. [2024-11-09 07:20:40,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:20:40,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 498 [2024-11-09 07:20:40,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:40,443 INFO L225 Difference]: With dead ends: 8802 [2024-11-09 07:20:40,444 INFO L226 Difference]: Without dead ends: 7251 [2024-11-09 07:20:40,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:20:40,454 INFO L432 NwaCegarLoop]: 2213 mSDtfsCounter, 2003 mSDsluCounter, 1927 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 0 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2003 SdHoareTripleChecker+Valid, 4140 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:40,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2003 Valid, 4140 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 530 Invalid, 11 Unknown, 0 Unchecked, 28.5s Time] [2024-11-09 07:20:40,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7251 states. [2024-11-09 07:20:40,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7251 to 7228. [2024-11-09 07:20:40,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7228 states, 4884 states have (on average 1.4152334152334152) internal successors, (6912), 5124 states have internal predecessors, (6912), 1808 states have call successors, (1808), 536 states have call predecessors, (1808), 535 states have return successors, (1806), 1723 states have call predecessors, (1806), 1806 states have call successors, (1806) [2024-11-09 07:20:40,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7228 states to 7228 states and 10526 transitions. [2024-11-09 07:20:40,829 INFO L78 Accepts]: Start accepts. Automaton has 7228 states and 10526 transitions. Word has length 498 [2024-11-09 07:20:40,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:40,830 INFO L471 AbstractCegarLoop]: Abstraction has 7228 states and 10526 transitions. [2024-11-09 07:20:40,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2024-11-09 07:20:40,830 INFO L276 IsEmpty]: Start isEmpty. Operand 7228 states and 10526 transitions. [2024-11-09 07:20:40,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-09 07:20:40,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:40,846 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:40,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 07:20:41,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:20:41,047 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:20:41,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:41,047 INFO L85 PathProgramCache]: Analyzing trace with hash 629903506, now seen corresponding path program 1 times [2024-11-09 07:20:41,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:20:41,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707540414] [2024-11-09 07:20:41,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:41,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:20:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:44,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4388 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4381 trivial. 0 not checked. [2024-11-09 07:20:44,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:20:44,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707540414] [2024-11-09 07:20:44,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707540414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:20:44,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559911286] [2024-11-09 07:20:44,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:44,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:20:44,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:20:44,251 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:20:44,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a03727-2adf-4c1d-9d93-7fc9b4246e69/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:20:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:48,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 8408 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 07:20:48,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:48,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4388 backedges. 168 proven. 1 refuted. 0 times theorem prover too weak. 4219 trivial. 0 not checked. [2024-11-09 07:20:48,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:50,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4388 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4381 trivial. 0 not checked. [2024-11-09 07:20:50,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559911286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:20:50,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [616732083] [2024-11-09 07:20:50,941 INFO L159 IcfgInterpreter]: Started Sifa with 168 locations of interest [2024-11-09 07:20:50,941 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:20:50,945 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:20:50,953 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:20:50,953 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:23:07,472 WARN L286 SmtUtils]: Spent 9.74s on a formula simplification that was a NOOP. DAG size: 6109 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:24:20,037 WARN L286 SmtUtils]: Spent 9.86s on a formula simplification that was a NOOP. DAG size: 6109 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:25:39,557 WARN L286 SmtUtils]: Spent 9.73s on a formula simplification that was a NOOP. DAG size: 6109 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:27:13,802 WARN L286 SmtUtils]: Spent 10.01s on a formula simplification that was a NOOP. DAG size: 6109 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:28:23,331 WARN L286 SmtUtils]: Spent 20.62s on a formula simplification that was a NOOP. DAG size: 7904 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 07:28:44,541 WARN L286 SmtUtils]: Spent 21.20s on a formula simplification that was a NOOP. DAG size: 7904 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 07:29:20,951 WARN L286 SmtUtils]: Spent 36.36s on a formula simplification. DAG size of input: 7939 DAG size of output: 7871 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 07:29:43,971 WARN L286 SmtUtils]: Spent 23.01s on a formula simplification that was a NOOP. DAG size: 7904 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 07:30:07,446 WARN L286 SmtUtils]: Spent 23.46s on a formula simplification that was a NOOP. DAG size: 7904 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 07:30:46,956 WARN L286 SmtUtils]: Spent 39.46s on a formula simplification. DAG size of input: 7939 DAG size of output: 7871 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)