./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--usb--serial--mos7840.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84ebedf-eafd-47b3-8b90-3651d9e3db13/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84ebedf-eafd-47b3-8b90-3651d9e3db13/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_c84ebedf-eafd-47b3-8b90-3651d9e3db13/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84ebedf-eafd-47b3-8b90-3651d9e3db13/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--usb--serial--mos7840.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84ebedf-eafd-47b3-8b90-3651d9e3db13/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_c84ebedf-eafd-47b3-8b90-3651d9e3db13/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 c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:11:46,315 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:11:46,381 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84ebedf-eafd-47b3-8b90-3651d9e3db13/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:11:46,386 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:11:46,387 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:11:46,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:11:46,413 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:11:46,414 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:11:46,415 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:11:46,415 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:11:46,416 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:11:46,417 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:11:46,417 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:11:46,418 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:11:46,419 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:11:46,419 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:11:46,420 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:11:46,421 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:11:46,421 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:11:46,422 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:11:46,423 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:11:46,423 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:11:46,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:11:46,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:11:46,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:11:46,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:11:46,427 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:11:46,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:11:46,428 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:11:46,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:11:46,429 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:11:46,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:11:46,430 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:11:46,430 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:11:46,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:11:46,431 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:11:46,431 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:11:46,432 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:11:46,432 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:11:46,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:11:46,432 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:11:46,433 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:11:46,433 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:11:46,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:11:46,434 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_c84ebedf-eafd-47b3-8b90-3651d9e3db13/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84ebedf-eafd-47b3-8b90-3651d9e3db13/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b [2023-11-23 21:11:46,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:11:46,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:11:46,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:11:46,683 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:11:46,684 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:11:46,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84ebedf-eafd-47b3-8b90-3651d9e3db13/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2023-11-23 21:11:49,878 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:11:50,451 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:11:50,452 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84ebedf-eafd-47b3-8b90-3651d9e3db13/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2023-11-23 21:11:50,499 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84ebedf-eafd-47b3-8b90-3651d9e3db13/bin/utaipan-verify-mE87zJ7Ire/data/2c4a4e5c1/f2992b98611c47bd8b2f5f8513f746ed/FLAG7c1f5717e [2023-11-23 21:11:50,517 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84ebedf-eafd-47b3-8b90-3651d9e3db13/bin/utaipan-verify-mE87zJ7Ire/data/2c4a4e5c1/f2992b98611c47bd8b2f5f8513f746ed [2023-11-23 21:11:50,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:11:50,524 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:11:50,528 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:11:50,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:11:50,534 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:11:50,538 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:11:50" (1/1) ... [2023-11-23 21:11:50,539 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1930b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:50, skipping insertion in model container [2023-11-23 21:11:50,539 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:11:50" (1/1) ... [2023-11-23 21:11:50,726 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:11:52,706 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_c84ebedf-eafd-47b3-8b90-3651d9e3db13/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2023-11-23 21:11:52,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:11:52,821 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:11:52,943 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; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [3946] [2023-11-23 21:11:52,945 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3953] [2023-11-23 21:11:52,946 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 %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [3962-3963] [2023-11-23 21:11:53,329 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_c84ebedf-eafd-47b3-8b90-3651d9e3db13/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2023-11-23 21:11:53,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:11:53,409 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:11:53,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:53 WrapperNode [2023-11-23 21:11:53,410 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:11:53,412 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:11:53,412 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:11:53,412 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:11:53,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:53" (1/1) ... [2023-11-23 21:11:53,540 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:53" (1/1) ... [2023-11-23 21:11:53,837 INFO L138 Inliner]: procedures = 191, calls = 4823, calls flagged for inlining = 80, calls inlined = 67, statements flattened = 8234 [2023-11-23 21:11:53,838 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:11:53,839 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:11:53,839 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:11:53,839 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:11:53,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:53" (1/1) ... [2023-11-23 21:11:53,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:53" (1/1) ... [2023-11-23 21:11:53,910 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:53" (1/1) ... [2023-11-23 21:11:53,910 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:53" (1/1) ... [2023-11-23 21:11:54,209 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:53" (1/1) ... [2023-11-23 21:11:54,243 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:53" (1/1) ... [2023-11-23 21:11:54,268 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:53" (1/1) ... [2023-11-23 21:11:54,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:53" (1/1) ... [2023-11-23 21:11:54,337 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:11:54,338 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:11:54,338 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:11:54,339 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:11:54,340 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:53" (1/1) ... [2023-11-23 21:11:54,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:11:54,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84ebedf-eafd-47b3-8b90-3651d9e3db13/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:11:54,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84ebedf-eafd-47b3-8b90-3651d9e3db13/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:11:54,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84ebedf-eafd-47b3-8b90-3651d9e3db13/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:11:54,409 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_probe [2023-11-23 21:11:54,409 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_probe [2023-11-23 21:11:54,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:11:54,411 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_reg_sync [2023-11-23 21:11:54,412 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_reg_sync [2023-11-23 21:11:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2023-11-23 21:11:54,412 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2023-11-23 21:11:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_reg_sync [2023-11-23 21:11:54,412 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_reg_sync [2023-11-23 21:11:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:11:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:11:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:11:54,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:11:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:11:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:11:54,414 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:11:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_write [2023-11-23 21:11:54,415 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_write [2023-11-23 21:11:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2023-11-23 21:11:54,415 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2023-11-23 21:11:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_ioctl [2023-11-23 21:11:54,415 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_ioctl [2023-11-23 21:11:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_tiocmiwait [2023-11-23 21:11:54,417 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_tiocmiwait [2023-11-23 21:11:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-23 21:11:54,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-23 21:11:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_control_urb [2023-11-23 21:11:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_control_urb [2023-11-23 21:11:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-23 21:11:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-23 21:11:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:11:54,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:11:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_port_private [2023-11-23 21:11:54,420 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_port_private [2023-11-23 21:11:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-23 21:11:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-23 21:11:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-23 21:11:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-23 21:11:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2023-11-23 21:11:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2023-11-23 21:11:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_uart_reg [2023-11-23 21:11:54,422 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_uart_reg [2023-11-23 21:11:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2023-11-23 21:11:54,422 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2023-11-23 21:11:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:11:54,422 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:11:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-11-23 21:11:54,423 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-11-23 21:11:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_usb_serial [2023-11-23 21:11:54,423 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_usb_serial [2023-11-23 21:11:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_get_icount [2023-11-23 21:11:54,423 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_get_icount [2023-11-23 21:11:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:11:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_led_async [2023-11-23 21:11:54,424 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_led_async [2023-11-23 21:11:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-23 21:11:54,424 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-23 21:11:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-23 21:11:54,425 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-23 21:11:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:11:54,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:11:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 21:11:54,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 21:11:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-23 21:11:54,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-23 21:11:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_termios [2023-11-23 21:11:54,427 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_termios [2023-11-23 21:11:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:11:54,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:11:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_led_sync [2023-11-23 21:11:54,428 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_led_sync [2023-11-23 21:11:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_3 [2023-11-23 21:11:54,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_3 [2023-11-23 21:11:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:11:54,429 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:11:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:11:54,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:11:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:11:54,430 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:11:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_chars_in_buffer [2023-11-23 21:11:54,430 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_chars_in_buffer [2023-11-23 21:11:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:11:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2023-11-23 21:11:54,431 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2023-11-23 21:11:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_throttle [2023-11-23 21:11:54,431 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_throttle [2023-11-23 21:11:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 21:11:54,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 21:11:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:11:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2023-11-23 21:11:54,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2023-11-23 21:11:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2023-11-23 21:11:54,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2023-11-23 21:11:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:11:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:11:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2023-11-23 21:11:54,433 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2023-11-23 21:11:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit_lock [2023-11-23 21:11:54,433 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit_lock [2023-11-23 21:11:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_uart_reg [2023-11-23 21:11:54,433 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_uart_reg [2023-11-23 21:11:54,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:11:54,434 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-23 21:11:54,434 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-23 21:11:54,434 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-11-23 21:11:54,434 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-11-23 21:11:54,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-23 21:11:54,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-23 21:11:54,435 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-23 21:11:54,436 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-23 21:11:54,436 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_paranoia_check [2023-11-23 21:11:54,436 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_paranoia_check [2023-11-23 21:11:54,436 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_serial_paranoia_check [2023-11-23 21:11:54,436 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_serial_paranoia_check [2023-11-23 21:11:54,436 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:11:54,437 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:11:54,437 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_led_activity [2023-11-23 21:11:54,438 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_led_activity [2023-11-23 21:11:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_bulk_in_callback [2023-11-23 21:11:54,438 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_bulk_in_callback [2023-11-23 21:11:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_write_room [2023-11-23 21:11:54,438 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_write_room [2023-11-23 21:11:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:11:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:11:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_calc_num_ports [2023-11-23 21:11:54,439 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_calc_num_ports [2023-11-23 21:11:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_break [2023-11-23 21:11:54,439 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_break [2023-11-23 21:11:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_tiocmset [2023-11-23 21:11:54,440 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_tiocmset [2023-11-23 21:11:54,440 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_tiocmget [2023-11-23 21:11:54,440 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_tiocmget [2023-11-23 21:11:54,441 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:11:54,441 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:11:54,441 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-11-23 21:11:54,441 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-11-23 21:11:54,442 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_port_private [2023-11-23 21:11:54,442 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_port_private [2023-11-23 21:11:54,442 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_unthrottle [2023-11-23 21:11:54,442 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_unthrottle [2023-11-23 21:11:54,442 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 21:11:54,442 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 21:11:54,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:11:54,443 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2023-11-23 21:11:54,444 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2023-11-23 21:11:54,446 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2023-11-23 21:11:54,447 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2023-11-23 21:11:54,447 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_remove [2023-11-23 21:11:54,448 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_remove [2023-11-23 21:11:54,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:11:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:11:54,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:11:55,172 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:11:55,179 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:11:57,354 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:12:06,906 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:12:09,665 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:12:09,665 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:12:09,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:09 BoogieIcfgContainer [2023-11-23 21:12:09,668 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:12:09,672 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:12:09,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:12:09,676 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:12:09,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:11:50" (1/3) ... [2023-11-23 21:12:09,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be5f2d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:09, skipping insertion in model container [2023-11-23 21:12:09,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:53" (2/3) ... [2023-11-23 21:12:09,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be5f2d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:09, skipping insertion in model container [2023-11-23 21:12:09,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:09" (3/3) ... [2023-11-23 21:12:09,682 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2023-11-23 21:12:09,706 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:12:09,707 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:12:09,833 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:12:09,841 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;@44ef7dbb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:12:09,841 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:12:09,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 1665 states, 1052 states have (on average 1.3745247148288973) internal successors, (1446), 1145 states have internal predecessors, (1446), 544 states have call successors, (544), 68 states have call predecessors, (544), 67 states have return successors, (539), 512 states have call predecessors, (539), 539 states have call successors, (539) [2023-11-23 21:12:09,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-23 21:12:09,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:09,893 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:09,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:09,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:09,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1356656781, now seen corresponding path program 1 times [2023-11-23 21:12:09,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:09,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904099056] [2023-11-23 21:12:09,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:09,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-23 21:12:13,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:13,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904099056] [2023-11-23 21:12:13,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904099056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:13,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:13,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:13,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024713736] [2023-11-23 21:12:13,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:13,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:13,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:13,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:13,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:13,595 INFO L87 Difference]: Start difference. First operand has 1665 states, 1052 states have (on average 1.3745247148288973) internal successors, (1446), 1145 states have internal predecessors, (1446), 544 states have call successors, (544), 68 states have call predecessors, (544), 67 states have return successors, (539), 512 states have call predecessors, (539), 539 states have call successors, (539) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 21:12:15,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:12:21,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-23 21:12:23,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-23 21:12:24,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:24,610 INFO L93 Difference]: Finished difference Result 3419 states and 5256 transitions. [2023-11-23 21:12:24,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:12:24,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 127 [2023-11-23 21:12:24,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:24,649 INFO L225 Difference]: With dead ends: 3419 [2023-11-23 21:12:24,649 INFO L226 Difference]: Without dead ends: 1766 [2023-11-23 21:12:24,676 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 21:12:24,679 INFO L413 NwaCegarLoop]: 2377 mSDtfsCounter, 189 mSDsluCounter, 2142 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 4519 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:24,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 4519 Invalid, 498 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 494 Invalid, 2 Unknown, 0 Unchecked, 10.7s Time] [2023-11-23 21:12:24,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2023-11-23 21:12:24,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1763. [2023-11-23 21:12:24,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1123 states have (on average 1.373107747105966) internal successors, (1542), 1218 states have internal predecessors, (1542), 558 states have call successors, (558), 82 states have call predecessors, (558), 81 states have return successors, (557), 524 states have call predecessors, (557), 557 states have call successors, (557) [2023-11-23 21:12:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2657 transitions. [2023-11-23 21:12:24,916 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2657 transitions. Word has length 127 [2023-11-23 21:12:24,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:24,919 INFO L495 AbstractCegarLoop]: Abstraction has 1763 states and 2657 transitions. [2023-11-23 21:12:24,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 21:12:24,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2657 transitions. [2023-11-23 21:12:24,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 21:12:24,931 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:24,931 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:24,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:12:24,932 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:24,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:24,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1088741451, now seen corresponding path program 1 times [2023-11-23 21:12:24,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:24,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139840499] [2023-11-23 21:12:24,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:24,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-23 21:12:28,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:28,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139840499] [2023-11-23 21:12:28,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139840499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:28,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:28,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:12:28,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641601897] [2023-11-23 21:12:28,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:28,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:12:28,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:28,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:12:28,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:12:28,582 INFO L87 Difference]: Start difference. First operand 1763 states and 2657 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 21:12:30,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:12:32,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []