./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--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b2e158-99d2-486d-abcb-dbaa958fab6c/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b2e158-99d2-486d-abcb-dbaa958fab6c/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b2e158-99d2-486d-abcb-dbaa958fab6c/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b2e158-99d2-486d-abcb-dbaa958fab6c/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b2e158-99d2-486d-abcb-dbaa958fab6c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b2e158-99d2-486d-abcb-dbaa958fab6c/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 246ceae3084839b9b339f99ac0b8607f0cf18f3fcdd140edc02c2b8d150b0ed6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:11:32,710 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:11:32,835 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b2e158-99d2-486d-abcb-dbaa958fab6c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 04:11:32,842 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:11:32,843 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:11:32,880 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:11:32,881 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:11:32,881 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:11:32,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:11:32,887 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:11:32,888 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:11:32,888 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:11:32,888 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:11:32,890 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:11:32,890 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:11:32,891 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:11:32,891 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:11:32,891 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:11:32,892 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:11:32,892 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:11:32,893 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:11:32,893 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:11:32,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:11:32,895 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:11:32,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:11:32,895 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:11:32,896 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:11:32,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:11:32,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:11:32,897 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:11:32,898 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:11:32,898 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:11:32,899 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:11:32,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:11:32,899 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:11:32,899 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:11:32,899 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:11:32,900 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:11:32,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:11:32,900 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:11:32,900 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:11:32,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:11:32,901 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_77b2e158-99d2-486d-abcb-dbaa958fab6c/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b2e158-99d2-486d-abcb-dbaa958fab6c/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 246ceae3084839b9b339f99ac0b8607f0cf18f3fcdd140edc02c2b8d150b0ed6 [2023-11-19 04:11:33,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:11:33,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:11:33,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:11:33,239 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:11:33,239 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:11:33,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b2e158-99d2-486d-abcb-dbaa958fab6c/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i [2023-11-19 04:11:36,441 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:11:37,190 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:11:37,192 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b2e158-99d2-486d-abcb-dbaa958fab6c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i [2023-11-19 04:11:37,242 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b2e158-99d2-486d-abcb-dbaa958fab6c/bin/utaipan-verify-t7M7D8N6sZ/data/f7758cfc2/7c8002f9dcf841f1be157d0f0e5579a9/FLAGaa4c20899 [2023-11-19 04:11:37,262 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b2e158-99d2-486d-abcb-dbaa958fab6c/bin/utaipan-verify-t7M7D8N6sZ/data/f7758cfc2/7c8002f9dcf841f1be157d0f0e5579a9 [2023-11-19 04:11:37,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:11:37,269 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:11:37,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:11:37,273 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:11:37,278 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:11:37,279 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:11:37" (1/1) ... [2023-11-19 04:11:37,280 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e5fb79c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:37, skipping insertion in model container [2023-11-19 04:11:37,280 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:11:37" (1/1) ... [2023-11-19 04:11:37,452 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:11:39,503 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_77b2e158-99d2-486d-abcb-dbaa958fab6c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i[261928,261941] [2023-11-19 04:11:39,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:11:39,669 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:11:39,804 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5603] [2023-11-19 04:11:39,832 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (19), "i" (12UL)); [5934-5935] [2023-11-19 04:11:39,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (36), "i" (12UL)); [5963-5964] [2023-11-19 04:11:39,970 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7206] [2023-11-19 04:11:39,986 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7495] [2023-11-19 04:11:40,093 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_77b2e158-99d2-486d-abcb-dbaa958fab6c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i[261928,261941] [2023-11-19 04:11:40,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:11:40,237 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:11:40,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:40 WrapperNode [2023-11-19 04:11:40,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:11:40,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:11:40,239 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:11:40,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:11:40,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:40" (1/1) ... [2023-11-19 04:11:40,334 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:40" (1/1) ... [2023-11-19 04:11:40,551 INFO L138 Inliner]: procedures = 236, calls = 1628, calls flagged for inlining = 116, calls inlined = 113, statements flattened = 5135 [2023-11-19 04:11:40,551 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:11:40,552 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:11:40,552 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:11:40,552 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:11:40,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:40" (1/1) ... [2023-11-19 04:11:40,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:40" (1/1) ... [2023-11-19 04:11:40,598 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:40" (1/1) ... [2023-11-19 04:11:40,599 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:40" (1/1) ... [2023-11-19 04:11:40,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:40" (1/1) ... [2023-11-19 04:11:40,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:40" (1/1) ... [2023-11-19 04:11:40,767 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:40" (1/1) ... [2023-11-19 04:11:40,882 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:40" (1/1) ... [2023-11-19 04:11:40,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:11:40,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:11:40,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:11:40,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:11:40,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:40" (1/1) ... [2023-11-19 04:11:40,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:11:40,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b2e158-99d2-486d-abcb-dbaa958fab6c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:11:40,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b2e158-99d2-486d-abcb-dbaa958fab6c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:11:40,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b2e158-99d2-486d-abcb-dbaa958fab6c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:11:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_3 [2023-11-19 04:11:40,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_3 [2023-11-19 04:11:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 04:11:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:11:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-11-19 04:11:40,994 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-11-19 04:11:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 04:11:40,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 04:11:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 04:11:40,995 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 04:11:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2023-11-19 04:11:40,995 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2023-11-19 04:11:40,996 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_set_filter_mode [2023-11-19 04:11:40,996 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_set_filter_mode [2023-11-19 04:11:40,996 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-19 04:11:40,996 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-19 04:11:40,997 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-19 04:11:40,997 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-19 04:11:40,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-19 04:11:40,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-19 04:11:40,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 04:11:40,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 04:11:40,998 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_resume [2023-11-19 04:11:40,999 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_resume [2023-11-19 04:11:40,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 04:11:40,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 04:11:41,000 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_phy_write_1bit [2023-11-19 04:11:41,000 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_phy_write_1bit [2023-11-19 04:11:41,000 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2023-11-19 04:11:41,000 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2023-11-19 04:11:41,000 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2023-11-19 04:11:41,001 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2023-11-19 04:11:41,001 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-19 04:11:41,001 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-19 04:11:41,001 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2023-11-19 04:11:41,001 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2023-11-19 04:11:41,001 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2023-11-19 04:11:41,002 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2023-11-19 04:11:41,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:11:41,002 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:11:41,002 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:11:41,002 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:11:41,002 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2023-11-19 04:11:41,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2023-11-19 04:11:41,003 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-19 04:11:41,003 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-19 04:11:41,003 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2023-11-19 04:11:41,003 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2023-11-19 04:11:41,003 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-11-19 04:11:41,003 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-11-19 04:11:41,004 INFO L130 BoogieDeclarations]: Found specification of procedure send_filter_frame [2023-11-19 04:11:41,004 INFO L138 BoogieDeclarations]: Found implementation of procedure send_filter_frame [2023-11-19 04:11:41,004 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_reuse_skb [2023-11-19 04:11:41,004 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_reuse_skb [2023-11-19 04:11:41,004 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2023-11-19 04:11:41,004 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2023-11-19 04:11:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:11:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2023-11-19 04:11:41,005 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2023-11-19 04:11:41,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:11:41,007 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2023-11-19 04:11:41,007 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2023-11-19 04:11:41,007 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-19 04:11:41,007 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-19 04:11:41,008 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-19 04:11:41,008 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-19 04:11:41,008 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2023-11-19 04:11:41,008 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2023-11-19 04:11:41,008 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-19 04:11:41,009 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-19 04:11:41,009 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 04:11:41,010 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 04:11:41,010 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2023-11-19 04:11:41,010 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2023-11-19 04:11:41,010 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_phy_read_1bit [2023-11-19 04:11:41,010 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_phy_read_1bit [2023-11-19 04:11:41,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:11:41,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:11:41,011 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 04:11:41,011 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 04:11:41,011 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_init_dm910x [2023-11-19 04:11:41,011 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_init_dm910x [2023-11-19 04:11:41,011 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2023-11-19 04:11:41,012 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2023-11-19 04:11:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-19 04:11:41,012 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-19 04:11:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure poll_dmfe [2023-11-19 04:11:41,013 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_dmfe [2023-11-19 04:11:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_phy_write [2023-11-19 04:11:41,013 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_phy_write [2023-11-19 04:11:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-19 04:11:41,013 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-19 04:11:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2023-11-19 04:11:41,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2023-11-19 04:11:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 04:11:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-19 04:11:41,014 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-19 04:11:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2023-11-19 04:11:41,014 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2023-11-19 04:11:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2023-11-19 04:11:41,015 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2023-11-19 04:11:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:11:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_remove_one [2023-11-19 04:11:41,015 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_remove_one [2023-11-19 04:11:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:11:41,016 INFO L130 BoogieDeclarations]: Found specification of procedure dm9132_id_table [2023-11-19 04:11:41,016 INFO L138 BoogieDeclarations]: Found implementation of procedure dm9132_id_table [2023-11-19 04:11:41,016 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-19 04:11:41,016 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-19 04:11:41,016 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-19 04:11:41,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-19 04:11:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-19 04:11:41,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-19 04:11:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_interrupt [2023-11-19 04:11:41,018 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_interrupt [2023-11-19 04:11:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-11-19 04:11:41,019 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-11-19 04:11:41,019 INFO L130 BoogieDeclarations]: Found specification of procedure update_cr6 [2023-11-19 04:11:41,019 INFO L138 BoogieDeclarations]: Found implementation of procedure update_cr6 [2023-11-19 04:11:41,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:11:41,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 04:11:41,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 04:11:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-19 04:11:41,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-19 04:11:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure cal_CRC [2023-11-19 04:11:41,020 INFO L138 BoogieDeclarations]: Found implementation of procedure cal_CRC [2023-11-19 04:11:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure srom_clk_write [2023-11-19 04:11:41,021 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_clk_write [2023-11-19 04:11:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:11:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-19 04:11:41,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-19 04:11:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:11:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_rx_buffer [2023-11-19 04:11:41,023 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_rx_buffer [2023-11-19 04:11:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2023-11-19 04:11:41,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2023-11-19 04:11:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-19 04:11:41,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-19 04:11:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:11:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2023-11-19 04:11:41,024 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2023-11-19 04:11:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2023-11-19 04:11:41,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2023-11-19 04:11:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2023-11-19 04:11:41,025 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2023-11-19 04:11:41,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_3 [2023-11-19 04:11:41,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_3 [2023-11-19 04:11:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_phy_read [2023-11-19 04:11:41,030 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_phy_read [2023-11-19 04:11:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2023-11-19 04:11:41,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2023-11-19 04:11:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_free_rxbuffer [2023-11-19 04:11:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_free_rxbuffer [2023-11-19 04:11:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2023-11-19 04:11:41,037 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2023-11-19 04:11:41,037 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2023-11-19 04:11:41,038 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2023-11-19 04:11:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-19 04:11:41,038 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-19 04:11:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:11:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:11:41,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:11:41,733 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:11:41,741 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:11:42,202 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 04:11:46,188 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:11:49,754 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:11:49,754 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:11:49,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:11:49 BoogieIcfgContainer [2023-11-19 04:11:49,773 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:11:49,777 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:11:49,777 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:11:49,781 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:11:49,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:11:37" (1/3) ... [2023-11-19 04:11:49,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eed6bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:11:49, skipping insertion in model container [2023-11-19 04:11:49,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:40" (2/3) ... [2023-11-19 04:11:49,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eed6bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:11:49, skipping insertion in model container [2023-11-19 04:11:49,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:11:49" (3/3) ... [2023-11-19 04:11:49,786 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i [2023-11-19 04:11:49,806 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:11:49,806 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:11:49,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:11:49,890 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;@247e2e6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:11:49,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:11:49,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 1135 states, 692 states have (on average 1.333815028901734) internal successors, (923), 715 states have internal predecessors, (923), 369 states have call successors, (369), 73 states have call predecessors, (369), 72 states have return successors, (362), 356 states have call predecessors, (362), 362 states have call successors, (362) [2023-11-19 04:11:49,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-19 04:11:49,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:49,935 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-19 04:11:49,936 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:11:49,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:49,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1669816167, now seen corresponding path program 1 times [2023-11-19 04:11:49,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:49,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571557400] [2023-11-19 04:11:49,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:49,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-19 04:11:51,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:51,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571557400] [2023-11-19 04:11:51,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571557400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:51,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:51,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:11:51,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514505159] [2023-11-19 04:11:51,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:51,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:11:51,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:51,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:11:51,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:11:51,309 INFO L87 Difference]: Start difference. First operand has 1135 states, 692 states have (on average 1.333815028901734) internal successors, (923), 715 states have internal predecessors, (923), 369 states have call successors, (369), 73 states have call predecessors, (369), 72 states have return successors, (362), 356 states have call predecessors, (362), 362 states have call successors, (362) Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 04:11:56,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:56,494 INFO L93 Difference]: Finished difference Result 3370 states and 4957 transitions. [2023-11-19 04:11:56,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:11:56,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 119 [2023-11-19 04:11:56,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:56,539 INFO L225 Difference]: With dead ends: 3370 [2023-11-19 04:11:56,540 INFO L226 Difference]: Without dead ends: 2220 [2023-11-19 04:11:56,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:11:56,561 INFO L413 NwaCegarLoop]: 1958 mSDtfsCounter, 1630 mSDsluCounter, 5316 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 7274 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:56,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 7274 Invalid, 1116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-19 04:11:56,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2023-11-19 04:11:56,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2205. [2023-11-19 04:11:56,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 1353 states have (on average 1.3215077605321508) internal successors, (1788), 1386 states have internal predecessors, (1788), 710 states have call successors, (710), 142 states have call predecessors, (710), 141 states have return successors, (709), 692 states have call predecessors, (709), 709 states have call successors, (709) [2023-11-19 04:11:56,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 3207 transitions. [2023-11-19 04:11:56,890 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 3207 transitions. Word has length 119 [2023-11-19 04:11:56,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:56,893 INFO L495 AbstractCegarLoop]: Abstraction has 2205 states and 3207 transitions. [2023-11-19 04:11:56,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 04:11:56,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 3207 transitions. [2023-11-19 04:11:56,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-19 04:11:56,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:56,912 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-19 04:11:56,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:11:56,913 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:11:56,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:56,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1531270355, now seen corresponding path program 1 times [2023-11-19 04:11:56,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:56,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992249717] [2023-11-19 04:11:56,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:56,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-19 04:11:57,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:57,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992249717] [2023-11-19 04:11:57,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992249717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:57,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:57,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:11:57,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816277204] [2023-11-19 04:11:57,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:57,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:11:57,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:57,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:11:57,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:11:57,490 INFO L87 Difference]: Start difference. First operand 2205 states and 3207 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 04:12:00,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:12:05,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:05,567 INFO L93 Difference]: Finished difference Result 4625 states and 6691 transitions. [2023-11-19 04:12:05,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:12:05,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 120 [2023-11-19 04:12:05,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:05,601 INFO L225 Difference]: With dead ends: 4625 [2023-11-19 04:12:05,601 INFO L226 Difference]: Without dead ends: 3315 [2023-11-19 04:12:05,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:12:05,617 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1598 mSDsluCounter, 4527 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 6104 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:05,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 6104 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-11-19 04:12:05,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3315 states. [2023-11-19 04:12:05,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3315 to 3295. [2023-11-19 04:12:05,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3295 states, 2025 states have (on average 1.3219753086419752) internal successors, (2677), 2072 states have internal predecessors, (2677), 1058 states have call successors, (1058), 212 states have call predecessors, (1058), 211 states have return successors, (1057), 1034 states have call predecessors, (1057), 1057 states have call successors, (1057) [2023-11-19 04:12:05,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3295 states to 3295 states and 4792 transitions. [2023-11-19 04:12:05,864 INFO L78 Accepts]: Start accepts. Automaton has 3295 states and 4792 transitions. Word has length 120 [2023-11-19 04:12:05,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:05,865 INFO L495 AbstractCegarLoop]: Abstraction has 3295 states and 4792 transitions. [2023-11-19 04:12:05,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 04:12:05,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3295 states and 4792 transitions. [2023-11-19 04:12:05,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-19 04:12:05,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:05,885 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-19 04:12:05,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:12:05,886 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:12:05,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:05,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1780855292, now seen corresponding path program 1 times [2023-11-19 04:12:05,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:12:05,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650782743] [2023-11-19 04:12:05,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:05,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:12:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-19 04:12:06,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:12:06,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650782743] [2023-11-19 04:12:06,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650782743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:12:06,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:12:06,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:12:06,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164198599] [2023-11-19 04:12:06,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:12:06,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:12:06,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:12:06,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:12:06,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:12:06,467 INFO L87 Difference]: Start difference. First operand 3295 states and 4792 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 04:12:12,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:12,043 INFO L93 Difference]: Finished difference Result 5720 states and 8278 transitions. [2023-11-19 04:12:12,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:12:12,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 121 [2023-11-19 04:12:12,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:12,074 INFO L225 Difference]: With dead ends: 5720 [2023-11-19 04:12:12,075 INFO L226 Difference]: Without dead ends: 3319 [2023-11-19 04:12:12,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:12:12,092 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1596 mSDsluCounter, 4527 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 6104 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:12,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1600 Valid, 6104 Invalid, 987 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-19 04:12:12,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2023-11-19 04:12:12,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 3299. [2023-11-19 04:12:12,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 2029 states have (on average 1.3213405618531295) internal successors, (2681), 2075 states have internal predecessors, (2681), 1057 states have call successors, (1057), 213 states have call predecessors, (1057), 212 states have return successors, (1056), 1034 states have call predecessors, (1056), 1056 states have call successors, (1056) [2023-11-19 04:12:12,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 4794 transitions. [2023-11-19 04:12:12,381 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 4794 transitions. Word has length 121 [2023-11-19 04:12:12,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:12,382 INFO L495 AbstractCegarLoop]: Abstraction has 3299 states and 4794 transitions. [2023-11-19 04:12:12,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 04:12:12,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 4794 transitions. [2023-11-19 04:12:12,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-19 04:12:12,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:12,395 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-19 04:12:12,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:12:12,396 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:12:12,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:12,397 INFO L85 PathProgramCache]: Analyzing trace with hash -728204310, now seen corresponding path program 1 times [2023-11-19 04:12:12,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:12:12,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235706387] [2023-11-19 04:12:12,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:12,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:12:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-19 04:12:12,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:12:12,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235706387] [2023-11-19 04:12:12,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235706387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:12:12,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:12:12,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:12:12,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219208413] [2023-11-19 04:12:12,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:12:12,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:12:12,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:12:12,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:12:12,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:12:12,963 INFO L87 Difference]: Start difference. First operand 3299 states and 4794 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 04:12:18,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:18,717 INFO L93 Difference]: Finished difference Result 5715 states and 8266 transitions. [2023-11-19 04:12:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:12:18,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 122 [2023-11-19 04:12:18,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:18,746 INFO L225 Difference]: With dead ends: 5715 [2023-11-19 04:12:18,746 INFO L226 Difference]: Without dead ends: 3309 [2023-11-19 04:12:18,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:12:18,761 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1594 mSDsluCounter, 4527 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 6104 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:18,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1598 Valid, 6104 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-19 04:12:18,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2023-11-19 04:12:18,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 3292. [2023-11-19 04:12:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3292 states, 2024 states have (on average 1.3206521739130435) internal successors, (2673), 2069 states have internal predecessors, (2673), 1055 states have call successors, (1055), 213 states have call predecessors, (1055), 212 states have return successors, (1054), 1033 states have call predecessors, (1054), 1054 states have call successors, (1054) [2023-11-19 04:12:18,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3292 states to 3292 states and 4782 transitions. [2023-11-19 04:12:18,994 INFO L78 Accepts]: Start accepts. Automaton has 3292 states and 4782 transitions. Word has length 122 [2023-11-19 04:12:18,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:18,995 INFO L495 AbstractCegarLoop]: Abstraction has 3292 states and 4782 transitions. [2023-11-19 04:12:18,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 04:12:18,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3292 states and 4782 transitions. [2023-11-19 04:12:19,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-19 04:12:19,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:19,008 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2023-11-19 04:12:19,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:12:19,008 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:12:19,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:19,009 INFO L85 PathProgramCache]: Analyzing trace with hash 545464240, now seen corresponding path program 1 times [2023-11-19 04:12:19,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:12:19,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001826075] [2023-11-19 04:12:19,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:19,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:12:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-19 04:12:19,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:12:19,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001826075] [2023-11-19 04:12:19,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001826075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:12:19,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:12:19,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:12:19,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118690166] [2023-11-19 04:12:19,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:12:19,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:12:19,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:12:19,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:12:19,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:12:19,312 INFO L87 Difference]: Start difference. First operand 3292 states and 4782 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16)