./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 30e01a73 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_f8bdea67-607c-4c76-97f9-be6baea56894/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bdea67-607c-4c76-97f9-be6baea56894/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bdea67-607c-4c76-97f9-be6baea56894/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bdea67-607c-4c76-97f9-be6baea56894/bin/utaipan-verify-mE87zJ7Ire/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_f8bdea67-607c-4c76-97f9-be6baea56894/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bdea67-607c-4c76-97f9-be6baea56894/bin/utaipan-verify-mE87zJ7Ire --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-30e01a7 [2023-11-23 21:27:07,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:27:07,095 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bdea67-607c-4c76-97f9-be6baea56894/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:27:07,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:27:07,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:27:07,133 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:27:07,133 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:27:07,134 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:27:07,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:27:07,136 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:27:07,137 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:27:07,137 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:27:07,138 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:27:07,139 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:27:07,139 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:27:07,140 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:27:07,141 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:27:07,142 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:27:07,142 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:27:07,143 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:27:07,144 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:27:07,145 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:27:07,146 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:27:07,147 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:27:07,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:27:07,148 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:27:07,149 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:27:07,149 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:27:07,150 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:27:07,151 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:27:07,151 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:27:07,152 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:27:07,152 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:27:07,153 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:27:07,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:27:07,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:27:07,154 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:27:07,155 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:27:07,155 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:27:07,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:27:07,156 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:27:07,157 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:27:07,157 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:27:07,158 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:27:07,158 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_f8bdea67-607c-4c76-97f9-be6baea56894/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bdea67-607c-4c76-97f9-be6baea56894/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f101c9f670424051cd8065375abf3569c944bebed10faf12f958054dc911cacc [2023-11-23 21:27:07,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:27:07,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:27:07,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:27:07,429 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:27:07,430 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:27:07,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bdea67-607c-4c76-97f9-be6baea56894/bin/utaipan-verify-mE87zJ7Ire/../../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 [2023-11-23 21:27:10,576 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:27:11,135 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:27:11,136 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bdea67-607c-4c76-97f9-be6baea56894/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 [2023-11-23 21:27:11,178 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bdea67-607c-4c76-97f9-be6baea56894/bin/utaipan-verify-mE87zJ7Ire/data/d2c755929/a7c1e4518b704308a716418a978df21c/FLAG177eb505b [2023-11-23 21:27:11,196 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bdea67-607c-4c76-97f9-be6baea56894/bin/utaipan-verify-mE87zJ7Ire/data/d2c755929/a7c1e4518b704308a716418a978df21c [2023-11-23 21:27:11,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:27:11,207 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:27:11,210 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:27:11,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:27:11,216 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:27:11,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:27:11" (1/1) ... [2023-11-23 21:27:11,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7228aef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:11, skipping insertion in model container [2023-11-23 21:27:11,218 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:27:11" (1/1) ... [2023-11-23 21:27:11,385 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:27:12,954 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_f8bdea67-607c-4c76-97f9-be6baea56894/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] [2023-11-23 21:27:13,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:27:13,198 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:27:13,572 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_f8bdea67-607c-4c76-97f9-be6baea56894/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] [2023-11-23 21:27:13,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:27:13,881 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:27:13,891 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:27:13,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:13 WrapperNode [2023-11-23 21:27:13,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:27:13,894 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:27:13,894 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:27:13,894 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:27:13,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:13" (1/1) ... [2023-11-23 21:27:14,040 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:13" (1/1) ... [2023-11-23 21:27:14,332 INFO L138 Inliner]: procedures = 186, calls = 1904, calls flagged for inlining = 81, calls inlined = 78, statements flattened = 5010 [2023-11-23 21:27:14,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:27:14,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:27:14,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:27:14,334 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:27:14,346 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:13" (1/1) ... [2023-11-23 21:27:14,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:13" (1/1) ... [2023-11-23 21:27:14,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:13" (1/1) ... [2023-11-23 21:27:14,384 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:13" (1/1) ... [2023-11-23 21:27:14,539 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:13" (1/1) ... [2023-11-23 21:27:14,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:13" (1/1) ... [2023-11-23 21:27:14,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:13" (1/1) ... [2023-11-23 21:27:14,613 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:13" (1/1) ... [2023-11-23 21:27:14,654 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:27:14,655 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:27:14,655 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:27:14,656 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:27:14,657 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:13" (1/1) ... [2023-11-23 21:27:14,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:27:14,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bdea67-607c-4c76-97f9-be6baea56894/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:27:14,694 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bdea67-607c-4c76-97f9-be6baea56894/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:27:14,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bdea67-607c-4c76-97f9-be6baea56894/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:27:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2023-11-23 21:27:14,756 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2023-11-23 21:27:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-23 21:27:14,756 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-23 21:27:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:27:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2023-11-23 21:27:14,759 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2023-11-23 21:27:14,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:27:14,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:27:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_max [2023-11-23 21:27:14,761 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_max [2023-11-23 21:27:14,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:27:14,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:27:14,761 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:27:14,761 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2023-11-23 21:27:14,762 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2023-11-23 21:27:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:27:14,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:27:14,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_lm78_data [2023-11-23 21:27:14,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_lm78_data [2023-11-23 21:27:14,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_lm78_data [2023-11-23 21:27:14,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_lm78_data [2023-11-23 21:27:14,765 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2023-11-23 21:27:14,766 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2023-11-23 21:27:14,767 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_div [2023-11-23 21:27:14,767 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_div [2023-11-23 21:27:14,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:27:14,768 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:27:14,769 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:27:14,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:27:14,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:27:14,770 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 21:27:14,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 21:27:14,770 INFO L130 BoogieDeclarations]: Found specification of procedure lm78_read_value [2023-11-23 21:27:14,771 INFO L138 BoogieDeclarations]: Found implementation of procedure lm78_read_value [2023-11-23 21:27:14,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:27:14,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:27:14,772 INFO L130 BoogieDeclarations]: Found specification of procedure IN_TO_REG [2023-11-23 21:27:14,772 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_TO_REG [2023-11-23 21:27:14,772 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_min [2023-11-23 21:27:14,773 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_min [2023-11-23 21:27:14,773 INFO L130 BoogieDeclarations]: Found specification of procedure lm78_isa_unregister [2023-11-23 21:27:14,773 INFO L138 BoogieDeclarations]: Found implementation of procedure lm78_isa_unregister [2023-11-23 21:27:14,773 INFO L130 BoogieDeclarations]: Found specification of procedure lm78_i2c_detect [2023-11-23 21:27:14,773 INFO L138 BoogieDeclarations]: Found implementation of procedure lm78_i2c_detect [2023-11-23 21:27:14,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:27:14,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:27:14,774 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:27:14,774 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:27:14,774 INFO L130 BoogieDeclarations]: Found specification of procedure TEMP_TO_REG [2023-11-23 21:27:14,774 INFO L138 BoogieDeclarations]: Found implementation of procedure TEMP_TO_REG [2023-11-23 21:27:14,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:27:14,775 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-23 21:27:14,775 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-23 21:27:14,775 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2023-11-23 21:27:14,775 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2023-11-23 21:27:14,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 21:27:14,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 21:27:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:27:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:27:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_min [2023-11-23 21:27:14,778 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_min [2023-11-23 21:27:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2023-11-23 21:27:14,779 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2023-11-23 21:27:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:27:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 21:27:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2023-11-23 21:27:14,780 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2023-11-23 21:27:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure lm78_write_value [2023-11-23 21:27:14,781 INFO L138 BoogieDeclarations]: Found implementation of procedure lm78_write_value [2023-11-23 21:27:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2023-11-23 21:27:14,781 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2023-11-23 21:27:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2023-11-23 21:27:14,782 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2023-11-23 21:27:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:27:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:27:14,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:27:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2023-11-23 21:27:14,783 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2023-11-23 21:27:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:27:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2023-11-23 21:27:14,783 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2023-11-23 21:27:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:27:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure lm78_update_device [2023-11-23 21:27:14,784 INFO L138 BoogieDeclarations]: Found implementation of procedure lm78_update_device [2023-11-23 21:27:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2023-11-23 21:27:14,785 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2023-11-23 21:27:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure TEMP_FROM_REG [2023-11-23 21:27:14,786 INFO L138 BoogieDeclarations]: Found implementation of procedure TEMP_FROM_REG [2023-11-23 21:27:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:27:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:27:14,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:27:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-23 21:27:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-23 21:27:15,582 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:27:15,587 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:27:15,854 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:27:23,362 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:27:24,184 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:27:24,184 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:27:24,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:27:24 BoogieIcfgContainer [2023-11-23 21:27:24,187 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:27:24,193 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:27:24,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:27:24,197 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:27:24,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:27:11" (1/3) ... [2023-11-23 21:27:24,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d149f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:27:24, skipping insertion in model container [2023-11-23 21:27:24,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:13" (2/3) ... [2023-11-23 21:27:24,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d149f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:27:24, skipping insertion in model container [2023-11-23 21:27:24,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:27:24" (3/3) ... [2023-11-23 21:27:24,203 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--lm78.ko-entry_point.cil.out.i [2023-11-23 21:27:24,230 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:27:24,230 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:27:24,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:27:24,429 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;@10c74643, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:27:24,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:27:24,445 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) [2023-11-23 21:27:24,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1555 [2023-11-23 21:27:24,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:24,581 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] [2023-11-23 21:27:24,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:24,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:24,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1558497043, now seen corresponding path program 1 times [2023-11-23 21:27:24,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:24,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142965423] [2023-11-23 21:27:24,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:24,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:30,813 INFO L134 CoverageAnalysis]: Checked inductivity of 70840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70840 trivial. 0 not checked. [2023-11-23 21:27:30,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:30,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142965423] [2023-11-23 21:27:30,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142965423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:30,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:30,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:30,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410376039] [2023-11-23 21:27:30,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:30,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:30,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:30,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:30,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:30,878 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) [2023-11-23 21:27:33,004 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 [] [2023-11-23 21:27:34,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:34,421 INFO L93 Difference]: Finished difference Result 3130 states and 4997 transitions. [2023-11-23 21:27:34,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:34,425 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 [2023-11-23 21:27:34,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:34,483 INFO L225 Difference]: With dead ends: 3130 [2023-11-23 21:27:34,483 INFO L226 Difference]: Without dead ends: 2074 [2023-11-23 21:27:34,500 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 [2023-11-23 21:27:34,504 INFO L413 NwaCegarLoop]: 1797 mSDtfsCounter, 1862 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 3169 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:34,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1862 Valid, 3169 Invalid, 182 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2023-11-23 21:27:34,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2023-11-23 21:27:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2061. [2023-11-23 21:27:34,812 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) [2023-11-23 21:27:34,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 3118 transitions. [2023-11-23 21:27:34,833 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 3118 transitions. Word has length 1554 [2023-11-23 21:27:34,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:34,839 INFO L495 AbstractCegarLoop]: Abstraction has 2061 states and 3118 transitions. [2023-11-23 21:27:34,840 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) [2023-11-23 21:27:34,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 3118 transitions. [2023-11-23 21:27:34,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1556 [2023-11-23 21:27:34,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:34,977 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] [2023-11-23 21:27:34,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:27:34,977 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:34,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:34,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1063812093, now seen corresponding path program 1 times [2023-11-23 21:27:34,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:34,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196780034] [2023-11-23 21:27:34,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:34,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 70840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70840 trivial. 0 not checked. [2023-11-23 21:27:39,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:39,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196780034] [2023-11-23 21:27:39,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196780034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:39,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:39,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:39,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873244436] [2023-11-23 21:27:39,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:39,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:39,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:39,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:39,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:39,214 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) [2023-11-23 21:27:41,313 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 [] [2023-11-23 21:27:42,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:42,104 INFO L93 Difference]: Finished difference Result 5599 states and 8482 transitions. [2023-11-23 21:27:42,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:42,105 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 [2023-11-23 21:27:42,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:42,159 INFO L225 Difference]: With dead ends: 5599 [2023-11-23 21:27:42,160 INFO L226 Difference]: Without dead ends: 3822 [2023-11-23 21:27:42,174 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 [2023-11-23 21:27:42,176 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, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:42,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1762 Valid, 2979 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 177 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2023-11-23 21:27:42,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3822 states. [2023-11-23 21:27:42,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3822 to 3809. [2023-11-23 21:27:42,616 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) [2023-11-23 21:27:42,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3809 states to 3809 states and 5772 transitions. [2023-11-23 21:27:42,666 INFO L78 Accepts]: Start accepts. Automaton has 3809 states and 5772 transitions. Word has length 1555 [2023-11-23 21:27:42,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:42,670 INFO L495 AbstractCegarLoop]: Abstraction has 3809 states and 5772 transitions. [2023-11-23 21:27:42,671 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) [2023-11-23 21:27:42,671 INFO L276 IsEmpty]: Start isEmpty. Operand 3809 states and 5772 transitions. [2023-11-23 21:27:42,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1554 [2023-11-23 21:27:42,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:42,702 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] [2023-11-23 21:27:42,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:27:42,703 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:42,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:42,704 INFO L85 PathProgramCache]: Analyzing trace with hash 373524699, now seen corresponding path program 1 times [2023-11-23 21:27:42,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:42,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717198827] [2023-11-23 21:27:42,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:42,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:45,947 INFO L134 CoverageAnalysis]: Checked inductivity of 70840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70840 trivial. 0 not checked. [2023-11-23 21:27:45,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:45,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717198827] [2023-11-23 21:27:45,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717198827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:45,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:45,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:45,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949461083] [2023-11-23 21:27:45,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:45,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:45,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:45,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:45,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:45,956 INFO L87 Difference]: Start difference. First operand 3809 states and 5772 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2023-11-23 21:27:48,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:27:48,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:48,830 INFO L93 Difference]: Finished difference Result 10815 states and 16398 transitions. [2023-11-23 21:27:48,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:48,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 1553 [2023-11-23 21:27:48,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:48,903 INFO L225 Difference]: With dead ends: 10815 [2023-11-23 21:27:48,903 INFO L226 Difference]: Without dead ends: 7290 [2023-11-23 21:27:48,924 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 [2023-11-23 21:27:48,925 INFO L413 NwaCegarLoop]: 1713 mSDtfsCounter, 1758 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1758 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:48,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1758 Valid, 2982 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 180 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2023-11-23 21:27:48,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7290 states. [2023-11-23 21:27:49,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7290 to 7277. [2023-11-23 21:27:49,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7277 states, 5096 states have (on average 1.4268053375196232) internal successors, (7271), 5138 states have internal predecessors, (7271), 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) [2023-11-23 21:27:49,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7277 states to 7277 states and 11032 transitions. [2023-11-23 21:27:49,628 INFO L78 Accepts]: Start accepts. Automaton has 7277 states and 11032 transitions. Word has length 1553 [2023-11-23 21:27:49,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:49,632 INFO L495 AbstractCegarLoop]: Abstraction has 7277 states and 11032 transitions. [2023-11-23 21:27:49,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2023-11-23 21:27:49,634 INFO L276 IsEmpty]: Start isEmpty. Operand 7277 states and 11032 transitions. [2023-11-23 21:27:49,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1554 [2023-11-23 21:27:49,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:49,665 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] [2023-11-23 21:27:49,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:27:49,666 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:49,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:49,667 INFO L85 PathProgramCache]: Analyzing trace with hash 993209026, now seen corresponding path program 1 times [2023-11-23 21:27:49,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:49,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667006262] [2023-11-23 21:27:49,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:49,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 70840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70840 trivial. 0 not checked. [2023-11-23 21:27:52,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:52,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667006262] [2023-11-23 21:27:52,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667006262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:52,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:52,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:52,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008925615] [2023-11-23 21:27:52,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:52,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:52,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:52,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:52,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:52,382 INFO L87 Difference]: Start difference. First operand 7277 states and 11032 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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)