./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-32_7a-drivers--hwmon--lm78.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdded791-f24f-4261-bf2c-26389dd52480/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdded791-f24f-4261-bf2c-26389dd52480/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdded791-f24f-4261-bf2c-26389dd52480/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdded791-f24f-4261-bf2c-26389dd52480/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--lm78.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdded791-f24f-4261-bf2c-26389dd52480/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdded791-f24f-4261-bf2c-26389dd52480/bin/utaipan-verify-t7M7D8N6sZ --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 f101c9f670424051cd8065375abf3569c944bebed10faf12f958054dc911cacc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:24:15,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:24:16,039 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdded791-f24f-4261-bf2c-26389dd52480/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:24:16,044 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:24:16,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:24:16,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:24:16,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:24:16,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:24:16,104 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:24:16,110 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:24:16,111 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:24:16,111 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:24:16,112 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:24:16,112 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:24:16,113 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:24:16,113 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:24:16,114 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:24:16,114 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:24:16,114 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:24:16,115 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:24:16,115 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:24:16,116 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:24:16,117 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:24:16,117 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:24:16,117 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:24:16,118 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:24:16,118 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:24:16,119 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:24:16,119 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:24:16,120 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:24:16,120 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:24:16,120 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:24:16,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:24:16,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:24:16,121 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:24:16,122 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:24:16,122 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:24:16,122 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:24:16,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:24:16,122 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:24:16,123 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:24:16,123 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:24:16,123 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_bdded791-f24f-4261-bf2c-26389dd52480/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdded791-f24f-4261-bf2c-26389dd52480/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f101c9f670424051cd8065375abf3569c944bebed10faf12f958054dc911cacc [2023-11-19 05:24:16,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:24:16,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:24:16,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:24:16,434 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:24:16,435 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:24:16,436 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdded791-f24f-4261-bf2c-26389dd52480/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--lm78.ko-entry_point.cil.out.i [2023-11-19 05:24:19,546 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:24:20,187 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:24:20,189 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdded791-f24f-4261-bf2c-26389dd52480/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--lm78.ko-entry_point.cil.out.i [2023-11-19 05:24:20,229 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdded791-f24f-4261-bf2c-26389dd52480/bin/utaipan-verify-t7M7D8N6sZ/data/46a1187d0/4aa653bc29314931b543331527834c6c/FLAG621ff4d48 [2023-11-19 05:24:20,249 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdded791-f24f-4261-bf2c-26389dd52480/bin/utaipan-verify-t7M7D8N6sZ/data/46a1187d0/4aa653bc29314931b543331527834c6c [2023-11-19 05:24:20,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:24:20,258 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:24:20,262 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:24:20,262 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:24:20,267 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:24:20,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:24:20" (1/1) ... [2023-11-19 05:24:20,269 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9eb7e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:20, skipping insertion in model container [2023-11-19 05:24:20,269 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:24:20" (1/1) ... [2023-11-19 05:24:20,414 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:24:21,690 WARN L240 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_bdded791-f24f-4261-bf2c-26389dd52480/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--lm78.ko-entry_point.cil.out.i[173663,173676] [2023-11-19 05:24:21,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:24:21,879 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:24:22,167 WARN L240 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_bdded791-f24f-4261-bf2c-26389dd52480/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--lm78.ko-entry_point.cil.out.i[173663,173676] [2023-11-19 05:24:22,183 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:24:22,558 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:24:22,566 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:24:22,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:22 WrapperNode [2023-11-19 05:24:22,567 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:24:22,569 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:24:22,569 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:24:22,569 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:24:22,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:22" (1/1) ... [2023-11-19 05:24:22,691 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:22" (1/1) ... [2023-11-19 05:24:22,910 INFO L138 Inliner]: procedures = 186, calls = 1904, calls flagged for inlining = 81, calls inlined = 78, statements flattened = 5010 [2023-11-19 05:24:22,911 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:24:22,912 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:24:22,912 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:24:22,912 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:24:22,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:22" (1/1) ... [2023-11-19 05:24:22,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:22" (1/1) ... [2023-11-19 05:24:22,964 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:22" (1/1) ... [2023-11-19 05:24:22,972 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:22" (1/1) ... [2023-11-19 05:24:23,096 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:22" (1/1) ... [2023-11-19 05:24:23,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:22" (1/1) ... [2023-11-19 05:24:23,138 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:22" (1/1) ... [2023-11-19 05:24:23,155 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:22" (1/1) ... [2023-11-19 05:24:23,187 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:24:23,188 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:24:23,188 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:24:23,188 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:24:23,189 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:22" (1/1) ... [2023-11-19 05:24:23,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:24:23,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdded791-f24f-4261-bf2c-26389dd52480/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:24:23,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdded791-f24f-4261-bf2c-26389dd52480/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:24:23,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdded791-f24f-4261-bf2c-26389dd52480/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:24:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2023-11-19 05:24:23,268 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2023-11-19 05:24:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-19 05:24:23,268 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-19 05:24:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:24:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2023-11-19 05:24:23,269 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2023-11-19 05:24:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:24:23,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:24:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_max [2023-11-19 05:24:23,270 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_max [2023-11-19 05:24:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:24:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 05:24:23,271 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 05:24:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2023-11-19 05:24:23,271 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2023-11-19 05:24:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:24:23,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:24:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_lm78_data [2023-11-19 05:24:23,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_lm78_data [2023-11-19 05:24:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_lm78_data [2023-11-19 05:24:23,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_lm78_data [2023-11-19 05:24:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2023-11-19 05:24:23,272 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2023-11-19 05:24:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_div [2023-11-19 05:24:23,272 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_div [2023-11-19 05:24:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:24:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 05:24:23,273 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 05:24:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 05:24:23,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 05:24:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-19 05:24:23,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-19 05:24:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure lm78_read_value [2023-11-19 05:24:23,274 INFO L138 BoogieDeclarations]: Found implementation of procedure lm78_read_value [2023-11-19 05:24:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:24:23,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:24:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure IN_TO_REG [2023-11-19 05:24:23,274 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_TO_REG [2023-11-19 05:24:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_min [2023-11-19 05:24:23,274 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_min [2023-11-19 05:24:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure lm78_isa_unregister [2023-11-19 05:24:23,275 INFO L138 BoogieDeclarations]: Found implementation of procedure lm78_isa_unregister [2023-11-19 05:24:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure lm78_i2c_detect [2023-11-19 05:24:23,275 INFO L138 BoogieDeclarations]: Found implementation of procedure lm78_i2c_detect [2023-11-19 05:24:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-19 05:24:23,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-19 05:24:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:24:23,275 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:24:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure TEMP_TO_REG [2023-11-19 05:24:23,276 INFO L138 BoogieDeclarations]: Found implementation of procedure TEMP_TO_REG [2023-11-19 05:24:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:24:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-19 05:24:23,276 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-19 05:24:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2023-11-19 05:24:23,276 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2023-11-19 05:24:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-19 05:24:23,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-19 05:24:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:24:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:24:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_min [2023-11-19 05:24:23,277 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_min [2023-11-19 05:24:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2023-11-19 05:24:23,277 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2023-11-19 05:24:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:24:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 05:24:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2023-11-19 05:24:23,278 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2023-11-19 05:24:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure lm78_write_value [2023-11-19 05:24:23,278 INFO L138 BoogieDeclarations]: Found implementation of procedure lm78_write_value [2023-11-19 05:24:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2023-11-19 05:24:23,278 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2023-11-19 05:24:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2023-11-19 05:24:23,278 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2023-11-19 05:24:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:24:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 05:24:23,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 05:24:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2023-11-19 05:24:23,279 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2023-11-19 05:24:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:24:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2023-11-19 05:24:23,279 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2023-11-19 05:24:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:24:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure lm78_update_device [2023-11-19 05:24:23,280 INFO L138 BoogieDeclarations]: Found implementation of procedure lm78_update_device [2023-11-19 05:24:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2023-11-19 05:24:23,280 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2023-11-19 05:24:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure TEMP_FROM_REG [2023-11-19 05:24:23,280 INFO L138 BoogieDeclarations]: Found implementation of procedure TEMP_FROM_REG [2023-11-19 05:24:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:24:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:24:23,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:24:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 05:24:23,281 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 05:24:23,955 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:24:23,963 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:24:24,229 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:24:41,946 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:24:42,780 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:24:42,780 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:24:42,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:42 BoogieIcfgContainer [2023-11-19 05:24:42,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:24:42,800 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:24:42,800 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:24:42,804 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:24:42,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:24:20" (1/3) ... [2023-11-19 05:24:42,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568dd321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:24:42, skipping insertion in model container [2023-11-19 05:24:42,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:22" (2/3) ... [2023-11-19 05:24:42,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568dd321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:24:42, skipping insertion in model container [2023-11-19 05:24:42,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:42" (3/3) ... [2023-11-19 05:24:42,808 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--lm78.ko-entry_point.cil.out.i [2023-11-19 05:24:42,828 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:24:42,828 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:24:42,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:24:42,945 INFO L357 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, mHoare=true, 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;@5888d8e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:24:42,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:24:42,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 1237 states, 781 states have (on average 1.4238156209987196) internal successors, (1112), 839 states have internal predecessors, (1112), 415 states have call successors, (415), 40 states have call predecessors, (415), 39 states have return successors, (366), 366 states have call predecessors, (366), 366 states have call successors, (366) [2023-11-19 05:24:43,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1555 [2023-11-19 05:24:43,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:43,098 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 119, 119, 119, 119, 119, 119, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:24:43,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:24:43,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:43,108 INFO L85 PathProgramCache]: Analyzing trace with hash -2075802794, now seen corresponding path program 1 times [2023-11-19 05:24:43,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:43,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410542894] [2023-11-19 05:24:43,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:43,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:48,234 INFO L134 CoverageAnalysis]: Checked inductivity of 70840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70840 trivial. 0 not checked. [2023-11-19 05:24:48,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:48,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410542894] [2023-11-19 05:24:48,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410542894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:48,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:24:48,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:24:48,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589925654] [2023-11-19 05:24:48,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:48,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:24:48,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:48,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:24:48,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:24:48,304 INFO L87 Difference]: Start difference. First operand has 1237 states, 781 states have (on average 1.4238156209987196) internal successors, (1112), 839 states have internal predecessors, (1112), 415 states have call successors, (415), 40 states have call predecessors, (415), 39 states have return successors, (366), 366 states have call predecessors, (366), 366 states have call successors, (366) Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2023-11-19 05:24:50,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:24:51,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:51,225 INFO L93 Difference]: Finished difference Result 3130 states and 4997 transitions. [2023-11-19 05:24:51,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:24:51,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) Word has length 1554 [2023-11-19 05:24:51,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:51,279 INFO L225 Difference]: With dead ends: 3130 [2023-11-19 05:24:51,280 INFO L226 Difference]: Without dead ends: 2074 [2023-11-19 05:24:51,298 INFO L412 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 [2023-11-19 05:24:51,303 INFO L413 NwaCegarLoop]: 1797 mSDtfsCounter, 1862 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 3169 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:51,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1862 Valid, 3169 Invalid, 182 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-19 05:24:51,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2023-11-19 05:24:51,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2061. [2023-11-19 05:24:51,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 1401 states have (on average 1.395431834403997) internal successors, (1955), 1413 states have internal predecessors, (1955), 584 states have call successors, (584), 76 states have call predecessors, (584), 75 states have return successors, (579), 577 states have call predecessors, (579), 579 states have call successors, (579) [2023-11-19 05:24:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 3118 transitions. [2023-11-19 05:24:51,692 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 3118 transitions. Word has length 1554 [2023-11-19 05:24:51,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:51,709 INFO L495 AbstractCegarLoop]: Abstraction has 2061 states and 3118 transitions. [2023-11-19 05:24:51,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2023-11-19 05:24:51,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 3118 transitions. [2023-11-19 05:24:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1556 [2023-11-19 05:24:51,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:51,828 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 119, 119, 119, 119, 119, 119, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:24:51,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:24:51,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:24:51,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:51,829 INFO L85 PathProgramCache]: Analyzing trace with hash 875993038, now seen corresponding path program 1 times [2023-11-19 05:24:51,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:51,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957722621] [2023-11-19 05:24:51,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:51,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 70840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70840 trivial. 0 not checked. [2023-11-19 05:24:56,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:56,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957722621] [2023-11-19 05:24:56,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957722621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:56,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:24:56,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:24:56,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082379626] [2023-11-19 05:24:56,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:56,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:24:56,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:56,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:24:56,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:24:56,068 INFO L87 Difference]: Start difference. First operand 2061 states and 3118 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2023-11-19 05:24:58,171 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 [] [2023-11-19 05:24:58,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:58,813 INFO L93 Difference]: Finished difference Result 5599 states and 8482 transitions. [2023-11-19 05:24:58,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:24:58,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) Word has length 1555 [2023-11-19 05:24:58,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:58,851 INFO L225 Difference]: With dead ends: 5599 [2023-11-19 05:24:58,851 INFO L226 Difference]: Without dead ends: 3822 [2023-11-19 05:24:58,863 INFO L412 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 [2023-11-19 05:24:58,864 INFO L413 NwaCegarLoop]: 1707 mSDtfsCounter, 1762 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:58,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1762 Valid, 2979 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 177 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2023-11-19 05:24:58,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3822 states. [2023-11-19 05:24:59,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3822 to 3809. [2023-11-19 05:24:59,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3809 states, 2640 states have (on average 1.4162878787878788) internal successors, (3739), 2662 states have internal predecessors, (3739), 1019 states have call successors, (1019), 150 states have call predecessors, (1019), 149 states have return successors, (1014), 1008 states have call predecessors, (1014), 1014 states have call successors, (1014) [2023-11-19 05:24:59,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3809 states to 3809 states and 5772 transitions. [2023-11-19 05:24:59,186 INFO L78 Accepts]: Start accepts. Automaton has 3809 states and 5772 transitions. Word has length 1555 [2023-11-19 05:24:59,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:59,189 INFO L495 AbstractCegarLoop]: Abstraction has 3809 states and 5772 transitions. [2023-11-19 05:24:59,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2023-11-19 05:24:59,190 INFO L276 IsEmpty]: Start isEmpty. Operand 3809 states and 5772 transitions. [2023-11-19 05:24:59,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1555 [2023-11-19 05:24:59,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:59,216 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 119, 119, 119, 119, 119, 119, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:24:59,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:24:59,217 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:24:59,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:59,228 INFO L85 PathProgramCache]: Analyzing trace with hash 222270291, now seen corresponding path program 1 times [2023-11-19 05:24:59,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:59,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312758512] [2023-11-19 05:24:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:59,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 70840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70840 trivial. 0 not checked. [2023-11-19 05:25:01,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:01,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312758512] [2023-11-19 05:25:01,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312758512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:01,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:25:01,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:25:01,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17182556] [2023-11-19 05:25:01,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:01,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:25:01,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:01,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:25:01,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:25:01,834 INFO L87 Difference]: Start difference. First operand 3809 states and 5772 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (146), 2 states have call predecessors, (146), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2023-11-19 05:25:03,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:25:04,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:04,639 INFO L93 Difference]: Finished difference Result 10823 states and 16414 transitions. [2023-11-19 05:25:04,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:25:04,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (146), 2 states have call predecessors, (146), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) Word has length 1554 [2023-11-19 05:25:04,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:04,704 INFO L225 Difference]: With dead ends: 10823 [2023-11-19 05:25:04,704 INFO L226 Difference]: Without dead ends: 7298 [2023-11-19 05:25:04,795 INFO L412 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 [2023-11-19 05:25:04,798 INFO L413 NwaCegarLoop]: 1717 mSDtfsCounter, 1758 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1758 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:04,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1758 Valid, 2990 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 176 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2023-11-19 05:25:04,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7298 states. [2023-11-19 05:25:05,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7298 to 7285. [2023-11-19 05:25:05,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7285 states, 5104 states have (on average 1.427703761755486) internal successors, (7287), 5146 states have internal predecessors, (7287), 1883 states have call successors, (1883), 298 states have call predecessors, (1883), 297 states have return successors, (1878), 1864 states have call predecessors, (1878), 1878 states have call successors, (1878) [2023-11-19 05:25:05,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7285 states to 7285 states and 11048 transitions. [2023-11-19 05:25:05,416 INFO L78 Accepts]: Start accepts. Automaton has 7285 states and 11048 transitions. Word has length 1554 [2023-11-19 05:25:05,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:05,419 INFO L495 AbstractCegarLoop]: Abstraction has 7285 states and 11048 transitions. [2023-11-19 05:25:05,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (146), 2 states have call predecessors, (146), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2023-11-19 05:25:05,420 INFO L276 IsEmpty]: Start isEmpty. Operand 7285 states and 11048 transitions. [2023-11-19 05:25:05,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1554 [2023-11-19 05:25:05,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:05,463 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 119, 119, 119, 119, 119, 119, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:25:05,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:25:05,463 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:25:05,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:05,465 INFO L85 PathProgramCache]: Analyzing trace with hash -296095027, now seen corresponding path program 1 times [2023-11-19 05:25:05,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:05,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454467874] [2023-11-19 05:25:05,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:05,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms