./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--usb--storage--uas.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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726eeef7-222a-414e-920d-e69fa42270a9/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726eeef7-222a-414e-920d-e69fa42270a9/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726eeef7-222a-414e-920d-e69fa42270a9/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726eeef7-222a-414e-920d-e69fa42270a9/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726eeef7-222a-414e-920d-e69fa42270a9/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726eeef7-222a-414e-920d-e69fa42270a9/bin/uautomizer-verify-uCwYo4JHxu --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:44:19,305 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:44:19,395 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726eeef7-222a-414e-920d-e69fa42270a9/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 07:44:19,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:44:19,409 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:44:19,459 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:44:19,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:44:19,460 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:44:19,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:44:19,461 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:44:19,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:44:19,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:44:19,464 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:44:19,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:44:19,468 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:44:19,469 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:44:19,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:44:19,474 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:44:19,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:44:19,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:44:19,477 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:44:19,477 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:44:19,478 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:44:19,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:44:19,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:44:19,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:44:19,479 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:44:19,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:44:19,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:44:19,481 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:44:19,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:44:19,481 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:44:19,482 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:44:19,482 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:44:19,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:44:19,482 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:44:19,483 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_726eeef7-222a-414e-920d-e69fa42270a9/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726eeef7-222a-414e-920d-e69fa42270a9/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 [2023-11-19 07:44:19,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:44:19,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:44:19,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:44:19,788 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:44:19,789 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:44:19,791 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726eeef7-222a-414e-920d-e69fa42270a9/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2023-11-19 07:44:22,966 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:44:23,583 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:44:23,585 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726eeef7-222a-414e-920d-e69fa42270a9/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2023-11-19 07:44:23,640 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726eeef7-222a-414e-920d-e69fa42270a9/bin/uautomizer-verify-uCwYo4JHxu/data/02d93061e/64ca13f2d67343d98acf0b004249731d/FLAG70fb24bee [2023-11-19 07:44:23,661 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726eeef7-222a-414e-920d-e69fa42270a9/bin/uautomizer-verify-uCwYo4JHxu/data/02d93061e/64ca13f2d67343d98acf0b004249731d [2023-11-19 07:44:23,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:44:23,666 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:44:23,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:44:23,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:44:23,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:44:23,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:23" (1/1) ... [2023-11-19 07:44:23,678 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58bb798e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:23, skipping insertion in model container [2023-11-19 07:44:23,678 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:23" (1/1) ... [2023-11-19 07:44:23,840 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:44:25,717 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_726eeef7-222a-414e-920d-e69fa42270a9/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2023-11-19 07:44:25,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:44:25,981 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:44:26,322 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_726eeef7-222a-414e-920d-e69fa42270a9/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2023-11-19 07:44:26,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:44:26,475 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:44:26,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:26 WrapperNode [2023-11-19 07:44:26,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:44:26,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:44:26,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:44:26,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:44:26,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:26" (1/1) ... [2023-11-19 07:44:26,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:26" (1/1) ... [2023-11-19 07:44:26,732 INFO L138 Inliner]: procedures = 250, calls = 1527, calls flagged for inlining = 88, calls inlined = 80, statements flattened = 3654 [2023-11-19 07:44:26,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:44:26,734 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:44:26,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:44:26,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:44:26,745 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:26" (1/1) ... [2023-11-19 07:44:26,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:26" (1/1) ... [2023-11-19 07:44:26,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:26" (1/1) ... [2023-11-19 07:44:26,791 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:26" (1/1) ... [2023-11-19 07:44:26,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:26" (1/1) ... [2023-11-19 07:44:26,936 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:26" (1/1) ... [2023-11-19 07:44:27,029 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:26" (1/1) ... [2023-11-19 07:44:27,052 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:26" (1/1) ... [2023-11-19 07:44:27,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:44:27,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:44:27,096 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:44:27,096 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:44:27,097 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:26" (1/1) ... [2023-11-19 07:44:27,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:44:27,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726eeef7-222a-414e-920d-e69fa42270a9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:27,128 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726eeef7-222a-414e-920d-e69fa42270a9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:44:27,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726eeef7-222a-414e-920d-e69fa42270a9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:44:27,175 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-19 07:44:27,175 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-19 07:44:27,176 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-19 07:44:27,176 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-19 07:44:27,177 INFO L130 BoogieDeclarations]: Found specification of procedure uas_zap_pending [2023-11-19 07:44:27,177 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_zap_pending [2023-11-19 07:44:27,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 07:44:27,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 07:44:27,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 07:44:27,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 07:44:27,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 07:44:27,178 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 07:44:27,178 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2023-11-19 07:44:27,178 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2023-11-19 07:44:27,179 INFO L130 BoogieDeclarations]: Found specification of procedure uas_alloc_data_urb [2023-11-19 07:44:27,179 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_alloc_data_urb [2023-11-19 07:44:27,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 07:44:27,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 07:44:27,181 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2023-11-19 07:44:27,181 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2023-11-19 07:44:27,181 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2023-11-19 07:44:27,181 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2023-11-19 07:44:27,181 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-19 07:44:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-19 07:44:27,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 07:44:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 07:44:27,182 INFO L130 BoogieDeclarations]: Found specification of procedure uas_add_work [2023-11-19 07:44:27,183 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_add_work [2023-11-19 07:44:27,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2023-11-19 07:44:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2023-11-19 07:44:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 07:44:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 07:44:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:44:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:44:27,186 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_endpoints [2023-11-19 07:44:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_endpoints [2023-11-19 07:44:27,186 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 07:44:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 07:44:27,187 INFO L130 BoogieDeclarations]: Found specification of procedure uas_log_cmd_state [2023-11-19 07:44:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_log_cmd_state [2023-11-19 07:44:27,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:44:27,188 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-19 07:44:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-19 07:44:27,188 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2023-11-19 07:44:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2023-11-19 07:44:27,188 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_urb [2023-11-19 07:44:27,189 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_urb [2023-11-19 07:44:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:44:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2023-11-19 07:44:27,189 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2023-11-19 07:44:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2023-11-19 07:44:27,189 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2023-11-19 07:44:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 07:44:27,190 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 07:44:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure uas_xfer_data [2023-11-19 07:44:27,190 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_xfer_data [2023-11-19 07:44:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2023-11-19 07:44:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2023-11-19 07:44:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wait_anchor_empty_timeout [2023-11-19 07:44:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wait_anchor_empty_timeout [2023-11-19 07:44:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:44:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:44:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 07:44:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 07:44:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure uas_try_complete [2023-11-19 07:44:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_try_complete [2023-11-19 07:44:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_report_bus_reset [2023-11-19 07:44:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_report_bus_reset [2023-11-19 07:44:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 07:44:27,193 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 07:44:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-11-19 07:44:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-11-19 07:44:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-19 07:44:27,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-19 07:44:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-19 07:44:27,196 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-19 07:44:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure uas_wait_for_pending_cmnds [2023-11-19 07:44:27,196 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_wait_for_pending_cmnds [2023-11-19 07:44:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2023-11-19 07:44:27,197 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2023-11-19 07:44:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-19 07:44:27,197 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-19 07:44:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-19 07:44:27,198 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-19 07:44:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 07:44:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure uas_data_cmplt [2023-11-19 07:44:27,198 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_data_cmplt [2023-11-19 07:44:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-19 07:44:27,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-19 07:44:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2023-11-19 07:44:27,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2023-11-19 07:44:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 07:44:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure uas_shutdown [2023-11-19 07:44:27,199 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_shutdown [2023-11-19 07:44:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:44:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2023-11-19 07:44:27,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2023-11-19 07:44:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure uas_do_work [2023-11-19 07:44:27,201 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_do_work [2023-11-19 07:44:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 07:44:27,202 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 07:44:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-19 07:44:27,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-19 07:44:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-19 07:44:27,202 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-19 07:44:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure uas_disconnect [2023-11-19 07:44:27,203 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_disconnect [2023-11-19 07:44:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2023-11-19 07:44:27,203 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2023-11-19 07:44:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2023-11-19 07:44:27,203 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2023-11-19 07:44:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:44:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure usb_pipe_endpoint [2023-11-19 07:44:27,204 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_pipe_endpoint [2023-11-19 07:44:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_out [2023-11-19 07:44:27,204 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_out [2023-11-19 07:44:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 07:44:27,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 07:44:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-19 07:44:27,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-19 07:44:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure uas_stat_cmplt [2023-11-19 07:44:27,206 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_stat_cmplt [2023-11-19 07:44:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:44:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:44:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2023-11-19 07:44:27,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2023-11-19 07:44:27,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-19 07:44:27,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-19 07:44:27,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:44:27,208 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 07:44:27,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 07:44:27,209 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2023-11-19 07:44:27,209 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2023-11-19 07:44:27,209 INFO L130 BoogieDeclarations]: Found specification of procedure uas_configure_endpoints [2023-11-19 07:44:27,209 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_configure_endpoints [2023-11-19 07:44:27,209 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-19 07:44:27,210 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-19 07:44:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_unsubmitted_urbs [2023-11-19 07:44:27,210 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_unsubmitted_urbs [2023-11-19 07:44:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_uas_alt_setting [2023-11-19 07:44:27,210 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_uas_alt_setting [2023-11-19 07:44:27,211 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2023-11-19 07:44:27,211 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2023-11-19 07:44:27,211 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2023-11-19 07:44:27,212 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2023-11-19 07:44:27,212 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-19 07:44:27,213 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-19 07:44:27,213 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2023-11-19 07:44:27,213 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2023-11-19 07:44:27,213 INFO L130 BoogieDeclarations]: Found specification of procedure uas_submit_urbs [2023-11-19 07:44:27,214 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_submit_urbs [2023-11-19 07:44:27,214 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2023-11-19 07:44:27,214 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2023-11-19 07:44:27,214 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2023-11-19 07:44:27,215 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2023-11-19 07:44:27,216 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-19 07:44:27,218 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-19 07:44:27,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:44:27,219 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_streams [2023-11-19 07:44:27,219 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_streams [2023-11-19 07:44:27,220 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-19 07:44:27,222 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-19 07:44:27,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:44:27,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:44:27,858 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:44:27,863 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:44:28,412 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 07:44:31,974 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:44:32,004 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:44:32,004 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:44:32,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:32 BoogieIcfgContainer [2023-11-19 07:44:32,020 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:44:32,024 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:44:32,024 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:44:32,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:44:32,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:44:23" (1/3) ... [2023-11-19 07:44:32,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79fe1b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:32, skipping insertion in model container [2023-11-19 07:44:32,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:26" (2/3) ... [2023-11-19 07:44:32,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79fe1b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:32, skipping insertion in model container [2023-11-19 07:44:32,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:32" (3/3) ... [2023-11-19 07:44:32,034 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2023-11-19 07:44:32,053 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:44:32,053 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:44:32,174 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:44:32,184 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=PETRI_NET, 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;@54ca489d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:44:32,185 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:44:32,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 1306 states, 956 states have (on average 1.4089958158995817) internal successors, (1347), 995 states have internal predecessors, (1347), 275 states have call successors, (275), 74 states have call predecessors, (275), 73 states have return successors, (269), 261 states have call predecessors, (269), 269 states have call successors, (269) [2023-11-19 07:44:32,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-19 07:44:32,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:44:32,213 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:32,213 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:44:32,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:32,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1106971609, now seen corresponding path program 1 times [2023-11-19 07:44:32,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:32,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411050745] [2023-11-19 07:44:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:32,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:34,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:44:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:34,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:44:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:34,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:44:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:34,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:44:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:34,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:44:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:34,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:44:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:34,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:44:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:34,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:44:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:34,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:44:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:34,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 07:44:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-19 07:44:34,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:34,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411050745] [2023-11-19 07:44:34,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411050745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:34,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:34,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:44:34,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872521478] [2023-11-19 07:44:34,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:34,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:44:34,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:34,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:44:34,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:44:34,546 INFO L87 Difference]: Start difference. First operand has 1306 states, 956 states have (on average 1.4089958158995817) internal successors, (1347), 995 states have internal predecessors, (1347), 275 states have call successors, (275), 74 states have call predecessors, (275), 73 states have return successors, (269), 261 states have call predecessors, (269), 269 states have call successors, (269) Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 07:44:39,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:44:39,847 INFO L93 Difference]: Finished difference Result 2968 states and 4461 transitions. [2023-11-19 07:44:39,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:44:39,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2023-11-19 07:44:39,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:44:39,900 INFO L225 Difference]: With dead ends: 2968 [2023-11-19 07:44:39,900 INFO L226 Difference]: Without dead ends: 1654 [2023-11-19 07:44:39,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:44:39,923 INFO L413 NwaCegarLoop]: 1391 mSDtfsCounter, 1456 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 902 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 902 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:44:39,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 2892 Invalid, 2334 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [902 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-19 07:44:39,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2023-11-19 07:44:40,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1293. [2023-11-19 07:44:40,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 951 states have (on average 1.3838065194532072) internal successors, (1316), 982 states have internal predecessors, (1316), 269 states have call successors, (269), 73 states have call predecessors, (269), 72 states have return successors, (263), 255 states have call predecessors, (263), 263 states have call successors, (263) [2023-11-19 07:44:40,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1848 transitions. [2023-11-19 07:44:40,127 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1848 transitions. Word has length 72 [2023-11-19 07:44:40,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:44:40,128 INFO L495 AbstractCegarLoop]: Abstraction has 1293 states and 1848 transitions. [2023-11-19 07:44:40,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 07:44:40,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1848 transitions. [2023-11-19 07:44:40,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-19 07:44:40,133 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:44:40,133 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:40,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:44:40,134 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:44:40,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:40,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1053268703, now seen corresponding path program 1 times [2023-11-19 07:44:40,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:40,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758200735] [2023-11-19 07:44:40,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:40,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:41,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:44:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:41,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:44:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:41,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:44:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:41,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:44:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:41,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:44:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:41,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:44:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:41,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:44:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:41,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:44:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:41,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:44:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:41,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 07:44:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-19 07:44:41,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:41,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758200735] [2023-11-19 07:44:41,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758200735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:41,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:41,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:44:41,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813093368] [2023-11-19 07:44:41,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:41,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:44:41,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:41,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:44:41,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:44:41,610 INFO L87 Difference]: Start difference. First operand 1293 states and 1848 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-19 07:44:47,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:44:51,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:44:51,056 INFO L93 Difference]: Finished difference Result 4556 states and 6703 transitions. [2023-11-19 07:44:51,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:44:51,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 72 [2023-11-19 07:44:51,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:44:51,087 INFO L225 Difference]: With dead ends: 4556 [2023-11-19 07:44:51,087 INFO L226 Difference]: Without dead ends: 3276 [2023-11-19 07:44:51,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:44:51,095 INFO L413 NwaCegarLoop]: 1384 mSDtfsCounter, 4708 mSDsluCounter, 3404 mSDsCounter, 0 mSdLazyCounter, 2561 mSolverCounterSat, 2048 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4903 SdHoareTripleChecker+Valid, 4788 SdHoareTripleChecker+Invalid, 4609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2048 IncrementalHoareTripleChecker+Valid, 2561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:44:51,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4903 Valid, 4788 Invalid, 4609 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2048 Valid, 2561 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-11-19 07:44:51,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2023-11-19 07:44:51,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 2550. [2023-11-19 07:44:51,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2550 states, 1878 states have (on average 1.3849840255591055) internal successors, (2601), 1935 states have internal predecessors, (2601), 527 states have call successors, (527), 145 states have call predecessors, (527), 144 states have return successors, (521), 505 states have call predecessors, (521), 521 states have call successors, (521) [2023-11-19 07:44:51,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3649 transitions. [2023-11-19 07:44:51,311 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3649 transitions. Word has length 72 [2023-11-19 07:44:51,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:44:51,312 INFO L495 AbstractCegarLoop]: Abstraction has 2550 states and 3649 transitions. [2023-11-19 07:44:51,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-19 07:44:51,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3649 transitions. [2023-11-19 07:44:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:44:51,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:44:51,323 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:51,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:44:51,323 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:44:51,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:51,324 INFO L85 PathProgramCache]: Analyzing trace with hash -445921870, now seen corresponding path program 1 times [2023-11-19 07:44:51,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:51,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139122562] [2023-11-19 07:44:51,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:51,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:52,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:44:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:52,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:44:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:52,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:44:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:52,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:44:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:52,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:44:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:52,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:44:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:52,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:44:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:52,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:44:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:52,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:44:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:52,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 07:44:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:52,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-19 07:44:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:52,669 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-19 07:44:52,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:52,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139122562] [2023-11-19 07:44:52,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139122562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:52,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:52,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:44:52,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337079130] [2023-11-19 07:44:52,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:52,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:44:52,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:52,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:44:52,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:44:52,672 INFO L87 Difference]: Start difference. First operand 2550 states and 3649 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 07:45:00,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:00,050 INFO L93 Difference]: Finished difference Result 8667 states and 12749 transitions. [2023-11-19 07:45:00,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:45:00,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 81 [2023-11-19 07:45:00,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:00,108 INFO L225 Difference]: With dead ends: 8667 [2023-11-19 07:45:00,108 INFO L226 Difference]: Without dead ends: 6140 [2023-11-19 07:45:00,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:45:00,126 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 5385 mSDsluCounter, 2088 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 2396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5535 SdHoareTripleChecker+Valid, 3775 SdHoareTripleChecker+Invalid, 4341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2396 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:00,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5535 Valid, 3775 Invalid, 4341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2396 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-11-19 07:45:00,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6140 states. [2023-11-19 07:45:00,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6140 to 4939. [2023-11-19 07:45:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4939 states, 3628 states have (on average 1.3900220507166483) internal successors, (5043), 3753 states have internal predecessors, (5043), 1022 states have call successors, (1022), 275 states have call predecessors, (1022), 288 states have return successors, (1086), 982 states have call predecessors, (1086), 1016 states have call successors, (1086) [2023-11-19 07:45:00,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4939 states to 4939 states and 7151 transitions. [2023-11-19 07:45:00,491 INFO L78 Accepts]: Start accepts. Automaton has 4939 states and 7151 transitions. Word has length 81 [2023-11-19 07:45:00,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:00,493 INFO L495 AbstractCegarLoop]: Abstraction has 4939 states and 7151 transitions. [2023-11-19 07:45:00,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 07:45:00,493 INFO L276 IsEmpty]: Start isEmpty. Operand 4939 states and 7151 transitions. [2023-11-19 07:45:00,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-19 07:45:00,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:00,497 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:00,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:45:00,498 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:00,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:00,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1105669667, now seen corresponding path program 1 times [2023-11-19 07:45:00,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:00,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832760222] [2023-11-19 07:45:00,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:00,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:01,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:45:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:01,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:45:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:01,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:45:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:01,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:45:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:01,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:45:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:01,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:45:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:01,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:45:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:01,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:45:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:01,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:45:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:01,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 07:45:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:01,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-19 07:45:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:01,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:45:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:01,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:45:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-19 07:45:01,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:01,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832760222] [2023-11-19 07:45:01,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832760222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:01,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:01,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:45:01,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465305704] [2023-11-19 07:45:01,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:01,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:45:01,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:01,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:45:01,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:45:01,689 INFO L87 Difference]: Start difference. First operand 4939 states and 7151 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-19 07:45:04,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []