./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-43_2a-drivers--scsi--megaraid--megaraid_mm.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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/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_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/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_43794221-a0fc-4015-8f4e-9e53693ef24b/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 34ead930b8137fdc7abb50622ed73bdb27f2c7ae71d0ef3b9d44cfc9bee95799 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:12:40,854 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:12:41,002 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:12:41,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:12:41,016 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:12:41,062 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:12:41,063 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:12:41,064 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:12:41,065 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:12:41,071 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:12:41,072 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:12:41,072 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:12:41,073 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:12:41,075 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:12:41,075 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:12:41,076 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:12:41,076 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:12:41,076 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:12:41,077 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:12:41,077 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:12:41,078 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:12:41,079 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:12:41,080 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:12:41,080 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:12:41,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:12:41,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:12:41,082 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:12:41,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:12:41,083 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:12:41,083 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:12:41,084 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:12:41,085 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:12:41,085 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:12:41,085 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:12:41,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:12:41,086 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:12:41,086 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:12:41,086 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:12:41,087 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:12:41,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:12:41,087 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:12:41,089 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:12:41,089 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:12:41,089 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:12:41,090 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_43794221-a0fc-4015-8f4e-9e53693ef24b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34ead930b8137fdc7abb50622ed73bdb27f2c7ae71d0ef3b9d44cfc9bee95799 [2023-11-23 21:12:41,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:12:41,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:12:41,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:12:41,510 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:12:41,511 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:12:41,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2023-11-23 21:12:44,876 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:12:45,511 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:12:45,511 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2023-11-23 21:12:45,557 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire/data/92206b729/32f62db44da849ae94cab9a49cc366b0/FLAGae593d1b4 [2023-11-23 21:12:45,573 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire/data/92206b729/32f62db44da849ae94cab9a49cc366b0 [2023-11-23 21:12:45,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:12:45,577 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:12:45,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:12:45,578 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:12:45,584 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:12:45,585 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:45" (1/1) ... [2023-11-23 21:12:45,586 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e85d8d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:45, skipping insertion in model container [2023-11-23 21:12:45,586 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:45" (1/1) ... [2023-11-23 21:12:45,693 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:12:46,903 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_43794221-a0fc-4015-8f4e-9e53693ef24b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[145794,145807] [2023-11-23 21:12:47,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:12:47,090 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:12:47,439 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_43794221-a0fc-4015-8f4e-9e53693ef24b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[145794,145807] [2023-11-23 21:12:47,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:12:47,541 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:12:47,550 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:12:47,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:47 WrapperNode [2023-11-23 21:12:47,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:12:47,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:12:47,554 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:12:47,554 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:12:47,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:47" (1/1) ... [2023-11-23 21:12:47,650 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:47" (1/1) ... [2023-11-23 21:12:47,800 INFO L138 Inliner]: procedures = 138, calls = 864, calls flagged for inlining = 61, calls inlined = 52, statements flattened = 1818 [2023-11-23 21:12:47,801 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:12:47,802 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:12:47,802 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:12:47,802 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:12:47,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:47" (1/1) ... [2023-11-23 21:12:47,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:47" (1/1) ... [2023-11-23 21:12:47,843 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:47" (1/1) ... [2023-11-23 21:12:47,843 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:47" (1/1) ... [2023-11-23 21:12:47,939 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:47" (1/1) ... [2023-11-23 21:12:47,953 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:47" (1/1) ... [2023-11-23 21:12:47,981 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:47" (1/1) ... [2023-11-23 21:12:48,006 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:47" (1/1) ... [2023-11-23 21:12:48,031 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:12:48,033 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:12:48,034 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:12:48,034 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:12:48,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:47" (1/1) ... [2023-11-23 21:12:48,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:12:48,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:12:48,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:12:48,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:12:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:12:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:12:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:12:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:12:48,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:12:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:12:48,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:12:48,127 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:12:48,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-23 21:12:48,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-23 21:12:48,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:12:48,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:12:48,129 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_dealloc_kioc [2023-11-23 21:12:48,129 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_dealloc_kioc [2023-11-23 21:12:48,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-23 21:12:48,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-23 21:12:48,130 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_attach_buf [2023-11-23 21:12:48,130 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_attach_buf [2023-11-23 21:12:48,130 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-11-23 21:12:48,131 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-11-23 21:12:48,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:12:48,131 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-23 21:12:48,131 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-23 21:12:48,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:12:48,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:12:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:12:48,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:12:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:12:48,134 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:12:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_ioctl [2023-11-23 21:12:48,135 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_ioctl [2023-11-23 21:12:48,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:12:48,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:12:48,135 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:12:48,135 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:12:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:12:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 21:12:48,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 21:12:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-23 21:12:48,136 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-23 21:12:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-23 21:12:48,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-23 21:12:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:12:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:12:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:12:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 21:12:48,138 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 21:12:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:12:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2023-11-23 21:12:48,138 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2023-11-23 21:12:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure up [2023-11-23 21:12:48,138 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2023-11-23 21:12:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:12:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-23 21:12:48,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-23 21:12:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:12:48,139 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:12:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:12:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:12:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:12:48,140 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:12:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2023-11-23 21:12:48,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2023-11-23 21:12:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:12:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:12:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:12:48,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:12:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2023-11-23 21:12:48,141 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2023-11-23 21:12:48,563 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:12:48,566 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:12:48,982 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:12:50,727 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:12:51,214 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:12:51,214 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:12:51,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:51 BoogieIcfgContainer [2023-11-23 21:12:51,217 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:12:51,220 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:12:51,220 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:12:51,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:12:51,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:12:45" (1/3) ... [2023-11-23 21:12:51,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12931150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:51, skipping insertion in model container [2023-11-23 21:12:51,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:47" (2/3) ... [2023-11-23 21:12:51,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12931150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:51, skipping insertion in model container [2023-11-23 21:12:51,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:51" (3/3) ... [2023-11-23 21:12:51,227 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2023-11-23 21:12:51,249 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:12:51,249 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:12:51,313 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:12:51,321 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;@4b53e12a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:12:51,321 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:12:51,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 316 states, 214 states have (on average 1.439252336448598) internal successors, (308), 222 states have internal predecessors, (308), 75 states have call successors, (75), 26 states have call predecessors, (75), 25 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-11-23 21:12:51,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-23 21:12:51,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:51,356 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:51,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:51,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:51,363 INFO L85 PathProgramCache]: Analyzing trace with hash 60426019, now seen corresponding path program 1 times [2023-11-23 21:12:51,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:51,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152727662] [2023-11-23 21:12:51,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:51,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-23 21:12:52,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:52,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152727662] [2023-11-23 21:12:52,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152727662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:52,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:52,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:12:52,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819070682] [2023-11-23 21:12:52,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:52,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:12:52,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:52,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:12:52,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:12:52,309 INFO L87 Difference]: Start difference. First operand has 316 states, 214 states have (on average 1.439252336448598) internal successors, (308), 222 states have internal predecessors, (308), 75 states have call successors, (75), 26 states have call predecessors, (75), 25 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 21:12:54,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:12:54,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:54,453 INFO L93 Difference]: Finished difference Result 616 states and 896 transitions. [2023-11-23 21:12:54,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:12:54,456 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2023-11-23 21:12:54,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:54,470 INFO L225 Difference]: With dead ends: 616 [2023-11-23 21:12:54,470 INFO L226 Difference]: Without dead ends: 305 [2023-11-23 21:12:54,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:12:54,482 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:54,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 383 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 21:12:54,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-23 21:12:54,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2023-11-23 21:12:54,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 209 states have (on average 1.4114832535885167) internal successors, (295), 212 states have internal predecessors, (295), 71 states have call successors, (71), 25 states have call predecessors, (71), 24 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-23 21:12:54,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 436 transitions. [2023-11-23 21:12:54,562 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 436 transitions. Word has length 136 [2023-11-23 21:12:54,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:54,564 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 436 transitions. [2023-11-23 21:12:54,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 21:12:54,565 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 436 transitions. [2023-11-23 21:12:54,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 21:12:54,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:54,572 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:54,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:12:54,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:54,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:54,573 INFO L85 PathProgramCache]: Analyzing trace with hash -349424555, now seen corresponding path program 1 times [2023-11-23 21:12:54,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:54,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040821566] [2023-11-23 21:12:54,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:54,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-23 21:12:54,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:54,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040821566] [2023-11-23 21:12:54,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040821566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:54,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:54,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:54,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131439317] [2023-11-23 21:12:54,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:54,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:54,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:54,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:54,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:54,963 INFO L87 Difference]: Start difference. First operand 305 states and 436 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 21:12:56,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:56,337 INFO L93 Difference]: Finished difference Result 626 states and 895 transitions. [2023-11-23 21:12:56,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:12:56,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2023-11-23 21:12:56,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:56,344 INFO L225 Difference]: With dead ends: 626 [2023-11-23 21:12:56,344 INFO L226 Difference]: Without dead ends: 336 [2023-11-23 21:12:56,346 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 21:12:56,348 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 55 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:56,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 714 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 21:12:56,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-11-23 21:12:56,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 334. [2023-11-23 21:12:56,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 232 states have (on average 1.418103448275862) internal successors, (329), 236 states have internal predecessors, (329), 74 states have call successors, (74), 28 states have call predecessors, (74), 27 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-23 21:12:56,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 476 transitions. [2023-11-23 21:12:56,395 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 476 transitions. Word has length 134 [2023-11-23 21:12:56,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:56,397 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 476 transitions. [2023-11-23 21:12:56,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 21:12:56,399 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 476 transitions. [2023-11-23 21:12:56,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-23 21:12:56,409 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:56,409 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:56,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:12:56,410 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:56,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:56,411 INFO L85 PathProgramCache]: Analyzing trace with hash 116686710, now seen corresponding path program 1 times [2023-11-23 21:12:56,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:56,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593677138] [2023-11-23 21:12:56,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:56,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:57,203 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-23 21:12:57,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:57,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593677138] [2023-11-23 21:12:57,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593677138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:57,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:57,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:57,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623280607] [2023-11-23 21:12:57,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:57,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:57,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:57,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:57,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:57,216 INFO L87 Difference]: Start difference. First operand 334 states and 476 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 21:12:58,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:58,312 INFO L93 Difference]: Finished difference Result 650 states and 931 transitions. [2023-11-23 21:12:58,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:12:58,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 172 [2023-11-23 21:12:58,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:58,318 INFO L225 Difference]: With dead ends: 650 [2023-11-23 21:12:58,320 INFO L226 Difference]: Without dead ends: 334 [2023-11-23 21:12:58,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 21:12:58,326 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 411 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:58,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 355 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 21:12:58,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-11-23 21:12:58,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2023-11-23 21:12:58,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 232 states have (on average 1.3793103448275863) internal successors, (320), 236 states have internal predecessors, (320), 74 states have call successors, (74), 28 states have call predecessors, (74), 27 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-23 21:12:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 467 transitions. [2023-11-23 21:12:58,385 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 467 transitions. Word has length 172 [2023-11-23 21:12:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:58,387 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 467 transitions. [2023-11-23 21:12:58,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 21:12:58,388 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 467 transitions. [2023-11-23 21:12:58,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-11-23 21:12:58,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:58,396 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:58,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:12:58,397 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:58,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:58,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1267488501, now seen corresponding path program 1 times [2023-11-23 21:12:58,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:58,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984536807] [2023-11-23 21:12:58,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:58,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:59,075 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-23 21:12:59,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:59,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984536807] [2023-11-23 21:12:59,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984536807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:59,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:59,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:59,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872572881] [2023-11-23 21:12:59,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:59,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:59,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:59,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:59,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:59,086 INFO L87 Difference]: Start difference. First operand 334 states and 467 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-23 21:13:00,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:00,302 INFO L93 Difference]: Finished difference Result 691 states and 967 transitions. [2023-11-23 21:13:00,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:13:00,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 186 [2023-11-23 21:13:00,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:00,308 INFO L225 Difference]: With dead ends: 691 [2023-11-23 21:13:00,308 INFO L226 Difference]: Without dead ends: 375 [2023-11-23 21:13:00,310 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 21:13:00,312 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 57 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:00,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 726 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 21:13:00,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-11-23 21:13:00,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 373. [2023-11-23 21:13:00,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 264 states have (on average 1.3825757575757576) internal successors, (365), 269 states have internal predecessors, (365), 77 states have call successors, (77), 32 states have call predecessors, (77), 31 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-23 21:13:00,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 518 transitions. [2023-11-23 21:13:00,343 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 518 transitions. Word has length 186 [2023-11-23 21:13:00,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:00,344 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 518 transitions. [2023-11-23 21:13:00,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-23 21:13:00,345 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 518 transitions. [2023-11-23 21:13:00,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-23 21:13:00,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:00,350 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:00,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:13:00,351 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:00,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:00,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1434300875, now seen corresponding path program 1 times [2023-11-23 21:13:00,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:00,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326360143] [2023-11-23 21:13:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:00,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-11-23 21:13:00,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:00,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326360143] [2023-11-23 21:13:00,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326360143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:00,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:00,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:13:00,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853757038] [2023-11-23 21:13:00,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:00,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:13:00,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:00,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:13:00,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:00,860 INFO L87 Difference]: Start difference. First operand 373 states and 518 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 21:13:03,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:03,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:03,464 INFO L93 Difference]: Finished difference Result 739 states and 1037 transitions. [2023-11-23 21:13:03,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:13:03,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 193 [2023-11-23 21:13:03,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:03,469 INFO L225 Difference]: With dead ends: 739 [2023-11-23 21:13:03,469 INFO L226 Difference]: Without dead ends: 384 [2023-11-23 21:13:03,471 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 21:13:03,472 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 8 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:03,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 725 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2023-11-23 21:13:03,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-23 21:13:03,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 374. [2023-11-23 21:13:03,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 265 states have (on average 1.381132075471698) internal successors, (366), 270 states have internal predecessors, (366), 77 states have call successors, (77), 32 states have call predecessors, (77), 31 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-23 21:13:03,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 519 transitions. [2023-11-23 21:13:03,496 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 519 transitions. Word has length 193 [2023-11-23 21:13:03,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:03,501 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 519 transitions. [2023-11-23 21:13:03,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 21:13:03,502 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 519 transitions. [2023-11-23 21:13:03,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-23 21:13:03,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:03,506 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:03,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:13:03,506 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:03,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:03,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1324263048, now seen corresponding path program 1 times [2023-11-23 21:13:03,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:03,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947026757] [2023-11-23 21:13:03,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:03,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-11-23 21:13:04,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:04,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947026757] [2023-11-23 21:13:04,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947026757] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:13:04,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812972895] [2023-11-23 21:13:04,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:04,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:13:04,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:04,033 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:13:04,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:13:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:04,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 2183 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:13:04,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:13:04,904 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-23 21:13:04,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:13:04,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812972895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:04,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:13:04,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-23 21:13:04,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024728658] [2023-11-23 21:13:04,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:04,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:13:04,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:04,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:13:04,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:13:04,908 INFO L87 Difference]: Start difference. First operand 374 states and 519 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 21:13:06,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:08,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:08,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:08,496 INFO L93 Difference]: Finished difference Result 736 states and 1031 transitions. [2023-11-23 21:13:08,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:13:08,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 196 [2023-11-23 21:13:08,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:08,501 INFO L225 Difference]: With dead ends: 736 [2023-11-23 21:13:08,501 INFO L226 Difference]: Without dead ends: 380 [2023-11-23 21:13:08,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:13:08,504 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 2 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:08,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 719 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-23 21:13:08,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-11-23 21:13:08,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 378. [2023-11-23 21:13:08,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 269 states have (on average 1.3828996282527881) internal successors, (372), 274 states have internal predecessors, (372), 77 states have call successors, (77), 32 states have call predecessors, (77), 31 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-23 21:13:08,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 525 transitions. [2023-11-23 21:13:08,530 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 525 transitions. Word has length 196 [2023-11-23 21:13:08,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:08,531 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 525 transitions. [2023-11-23 21:13:08,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 21:13:08,532 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 525 transitions. [2023-11-23 21:13:08,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-23 21:13:08,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:08,537 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:08,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 21:13:08,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:13:08,762 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:08,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:08,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1435729254, now seen corresponding path program 1 times [2023-11-23 21:13:08,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:08,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636996039] [2023-11-23 21:13:08,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:08,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:09,774 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-23 21:13:09,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:09,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636996039] [2023-11-23 21:13:09,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636996039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:09,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:09,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:13:09,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076020329] [2023-11-23 21:13:09,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:09,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:13:09,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:09,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:13:09,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:13:09,779 INFO L87 Difference]: Start difference. First operand 378 states and 525 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-23 21:13:12,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:12,177 INFO L93 Difference]: Finished difference Result 742 states and 1035 transitions. [2023-11-23 21:13:12,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:13:12,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 204 [2023-11-23 21:13:12,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:12,182 INFO L225 Difference]: With dead ends: 742 [2023-11-23 21:13:12,184 INFO L226 Difference]: Without dead ends: 382 [2023-11-23 21:13:12,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:13:12,187 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 3 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:12,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1084 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-23 21:13:12,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-11-23 21:13:12,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 380. [2023-11-23 21:13:12,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 271 states have (on average 1.3800738007380073) internal successors, (374), 276 states have internal predecessors, (374), 77 states have call successors, (77), 32 states have call predecessors, (77), 31 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-23 21:13:12,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 527 transitions. [2023-11-23 21:13:12,220 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 527 transitions. Word has length 204 [2023-11-23 21:13:12,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:12,223 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 527 transitions. [2023-11-23 21:13:12,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-23 21:13:12,223 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 527 transitions. [2023-11-23 21:13:12,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-23 21:13:12,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:12,229 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:12,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:13:12,229 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:12,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:12,231 INFO L85 PathProgramCache]: Analyzing trace with hash 473743971, now seen corresponding path program 1 times [2023-11-23 21:13:12,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:12,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399758548] [2023-11-23 21:13:12,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:12,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-23 21:13:12,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:12,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399758548] [2023-11-23 21:13:12,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399758548] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:13:12,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102291472] [2023-11-23 21:13:12,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:12,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:13:12,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:12,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:13:12,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43794221-a0fc-4015-8f4e-9e53693ef24b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:13:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:13,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 2296 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:13:13,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:13:13,662 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-23 21:13:13,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:13:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-23 21:13:13,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102291472] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:13:13,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1284372598] [2023-11-23 21:13:13,940 INFO L159 IcfgInterpreter]: Started Sifa with 132 locations of interest [2023-11-23 21:13:13,941 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:13:13,949 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:13:13,955 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:13:13,956 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:13:22,869 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_memset with input of size 935 for LOIs [2023-11-23 21:13:28,001 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 935 for LOIs [2023-11-23 21:13:29,113 INFO L180 IcfgInterpreter]: Interpretation finished