./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.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_c98b714a-0a8a-4052-b041-2fb7e125664f/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c98b714a-0a8a-4052-b041-2fb7e125664f/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_c98b714a-0a8a-4052-b041-2fb7e125664f/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c98b714a-0a8a-4052-b041-2fb7e125664f/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c98b714a-0a8a-4052-b041-2fb7e125664f/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_c98b714a-0a8a-4052-b041-2fb7e125664f/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 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:30:06,220 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:30:06,293 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c98b714a-0a8a-4052-b041-2fb7e125664f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:30:06,300 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:30:06,301 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:30:06,330 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:30:06,331 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:30:06,332 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:30:06,333 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:30:06,334 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:30:06,334 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:30:06,335 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:30:06,335 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:30:06,336 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:30:06,337 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:30:06,337 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:30:06,338 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:30:06,338 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:30:06,339 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:30:06,340 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:30:06,340 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:30:06,341 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:30:06,342 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:30:06,343 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:30:06,343 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:30:06,344 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:30:06,348 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:30:06,349 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:30:06,350 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:30:06,350 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:30:06,351 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:30:06,351 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:30:06,352 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:30:06,352 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:30:06,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:30:06,357 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:30:06,358 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:30:06,358 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:30:06,359 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:30:06,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:30:06,359 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:30:06,360 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:30:06,360 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:30:06,361 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:30:06,361 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_c98b714a-0a8a-4052-b041-2fb7e125664f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c98b714a-0a8a-4052-b041-2fb7e125664f/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d [2023-11-23 21:30:06,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:30:06,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:30:06,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:30:06,687 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:30:06,687 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:30:06,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c98b714a-0a8a-4052-b041-2fb7e125664f/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2023-11-23 21:30:09,996 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:30:10,636 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:30:10,636 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c98b714a-0a8a-4052-b041-2fb7e125664f/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2023-11-23 21:30:10,699 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c98b714a-0a8a-4052-b041-2fb7e125664f/bin/utaipan-verify-mE87zJ7Ire/data/beb27fdbf/76ada69a4a3941a59f7a428e41cebd7c/FLAGe2f0763df [2023-11-23 21:30:10,720 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c98b714a-0a8a-4052-b041-2fb7e125664f/bin/utaipan-verify-mE87zJ7Ire/data/beb27fdbf/76ada69a4a3941a59f7a428e41cebd7c [2023-11-23 21:30:10,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:30:10,730 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:30:10,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:30:10,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:30:10,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:30:10,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:10" (1/1) ... [2023-11-23 21:30:10,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ef48cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:10, skipping insertion in model container [2023-11-23 21:30:10,748 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:10" (1/1) ... [2023-11-23 21:30:10,900 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:30:12,220 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_c98b714a-0a8a-4052-b041-2fb7e125664f/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2023-11-23 21:30:12,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:30:12,955 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:30:13,083 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"); [3569] [2023-11-23 21:30:13,086 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [3576] [2023-11-23 21:30:13,086 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 %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [3584-3585] [2023-11-23 21:30:13,089 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; xaddb %b0, %1\n": "+q" (__ret), "+m" (v->counter): : "memory", "cc"); [3624-3625] [2023-11-23 21:30:13,089 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; xaddw %w0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3628-3629] [2023-11-23 21:30:13,090 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; xaddl %0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3632-3633] [2023-11-23 21:30:13,090 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; xaddq %q0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3636-3637] [2023-11-23 21:30:13,119 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_c98b714a-0a8a-4052-b041-2fb7e125664f/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2023-11-23 21:30:13,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:30:13,593 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:30:13,593 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:30:13,593 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:30:13,602 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:30:13,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:13 WrapperNode [2023-11-23 21:30:13,603 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:30:13,605 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:30:13,605 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:30:13,605 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:30:13,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:13" (1/1) ... [2023-11-23 21:30:13,745 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:13" (1/1) ... [2023-11-23 21:30:14,001 INFO L138 Inliner]: procedures = 245, calls = 3626, calls flagged for inlining = 121, calls inlined = 121, statements flattened = 6981 [2023-11-23 21:30:14,002 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:30:14,003 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:30:14,003 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:30:14,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:30:14,014 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:13" (1/1) ... [2023-11-23 21:30:14,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:13" (1/1) ... [2023-11-23 21:30:14,085 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:13" (1/1) ... [2023-11-23 21:30:14,085 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:13" (1/1) ... [2023-11-23 21:30:14,260 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:13" (1/1) ... [2023-11-23 21:30:14,397 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:13" (1/1) ... [2023-11-23 21:30:14,449 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:13" (1/1) ... [2023-11-23 21:30:14,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:13" (1/1) ... [2023-11-23 21:30:14,567 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:30:14,569 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:30:14,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:30:14,571 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:30:14,572 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:13" (1/1) ... [2023-11-23 21:30:14,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:30:14,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c98b714a-0a8a-4052-b041-2fb7e125664f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:14,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c98b714a-0a8a-4052-b041-2fb7e125664f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:30:14,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c98b714a-0a8a-4052-b041-2fb7e125664f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:30:14,656 INFO L130 BoogieDeclarations]: Found specification of procedure acm_disconnect [2023-11-23 21:30:14,656 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_disconnect [2023-11-23 21:30:14,656 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_hangup [2023-11-23 21:30:14,657 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_hangup [2023-11-23 21:30:14,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_18 [2023-11-23 21:30:14,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_18 [2023-11-23 21:30:14,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:30:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:30:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:30:14,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:30:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_destruct [2023-11-23 21:30:14,659 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_destruct [2023-11-23 21:30:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2023-11-23 21:30:14,659 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2023-11-23 21:30:14,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2023-11-23 21:30:14,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2023-11-23 21:30:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_22 [2023-11-23 21:30:14,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_22 [2023-11-23 21:30:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_cleanup [2023-11-23 21:30:14,662 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_cleanup [2023-11-23 21:30:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:30:14,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:30:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2023-11-23 21:30:14,663 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2023-11-23 21:30:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2023-11-23 21:30:14,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2023-11-23 21:30:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_buffers_free [2023-11-23 21:30:14,663 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_buffers_free [2023-11-23 21:30:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:30:14,664 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:30:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:30:14,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:30:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2023-11-23 21:30:14,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2023-11-23 21:30:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2023-11-23 21:30:14,664 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2023-11-23 21:30:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:30:14,665 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:30:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:30:14,665 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:30:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2023-11-23 21:30:14,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2023-11-23 21:30:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 21:30:14,666 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 21:30:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_put [2023-11-23 21:30:14,666 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_put [2023-11-23 21:30:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_chars_in_buffer [2023-11-23 21:30:14,666 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_chars_in_buffer [2023-11-23 21:30:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure acm_resume [2023-11-23 21:30:14,667 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_resume [2023-11-23 21:30:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:30:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 21:30:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:30:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_msg [2023-11-23 21:30:14,669 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_msg [2023-11-23 21:30:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-11-23 21:30:14,669 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-11-23 21:30:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:30:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_hangup [2023-11-23 21:30:14,670 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_hangup [2023-11-23 21:30:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2023-11-23 21:30:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2023-11-23 21:30:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-11-23 21:30:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:30:14,672 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:30:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2023-11-23 21:30:14,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2023-11-23 21:30:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:30:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:30:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-23 21:30:14,673 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-23 21:30:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:30:14,673 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:30:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2023-11-23 21:30:14,673 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2023-11-23 21:30:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 21:30:14,674 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 21:30:14,675 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-23 21:30:14,675 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-23 21:30:14,675 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 21:30:14,675 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 21:30:14,675 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmget [2023-11-23 21:30:14,675 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmget [2023-11-23 21:30:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_shutdown [2023-11-23 21:30:14,676 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_shutdown [2023-11-23 21:30:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2023-11-23 21:30:14,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2023-11-23 21:30:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_set_termios [2023-11-23 21:30:14,676 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_set_termios [2023-11-23 21:30:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:30:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-23 21:30:14,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-23 21:30:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-23 21:30:14,677 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-23 21:30:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_break_ctl [2023-11-23 21:30:14,677 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_break_ctl [2023-11-23 21:30:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 21:30:14,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 21:30:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:30:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2023-11-23 21:30:14,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2023-11-23 21:30:14,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2023-11-23 21:30:14,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2023-11-23 21:30:14,679 INFO L130 BoogieDeclarations]: Found specification of procedure usb_mark_last_busy [2023-11-23 21:30:14,679 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_mark_last_busy [2023-11-23 21:30:14,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:30:14,680 INFO L130 BoogieDeclarations]: Found specification of procedure acm_start_wb [2023-11-23 21:30:14,681 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_start_wb [2023-11-23 21:30:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-11-23 21:30:14,681 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-11-23 21:30:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:30:14,681 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:30:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-23 21:30:14,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-23 21:30:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_throttle [2023-11-23 21:30:14,682 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_throttle [2023-11-23 21:30:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure acm_wb_is_avail [2023-11-23 21:30:14,682 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_wb_is_avail [2023-11-23 21:30:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-23 21:30:14,682 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-23 21:30:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-23 21:30:14,683 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-23 21:30:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_write_room [2023-11-23 21:30:14,684 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_write_room [2023-11-23 21:30:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2023-11-23 21:30:14,684 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2023-11-23 21:30:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:30:14,685 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:30:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:30:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_done [2023-11-23 21:30:14,685 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_done [2023-11-23 21:30:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 21:30:14,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 21:30:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_ioctl [2023-11-23 21:30:14,686 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_ioctl [2023-11-23 21:30:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure acm_release_minor [2023-11-23 21:30:14,687 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_release_minor [2023-11-23 21:30:14,687 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-23 21:30:14,690 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-23 21:30:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:30:14,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:30:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2023-11-23 21:30:14,693 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2023-11-23 21:30:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2023-11-23 21:30:14,694 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2023-11-23 21:30:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:30:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_3 [2023-11-23 21:30:14,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_3 [2023-11-23 21:30:14,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:30:14,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 21:30:14,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 21:30:14,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:30:14,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_17 [2023-11-23 21:30:14,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_17 [2023-11-23 21:30:14,701 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:30:14,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:30:14,701 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-23 21:30:14,701 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-23 21:30:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2023-11-23 21:30:14,702 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2023-11-23 21:30:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_buffers_free [2023-11-23 21:30:14,702 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_buffers_free [2023-11-23 21:30:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_irq [2023-11-23 21:30:14,702 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_irq [2023-11-23 21:30:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2023-11-23 21:30:14,703 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2023-11-23 21:30:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_install [2023-11-23 21:30:14,703 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_install [2023-11-23 21:30:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure stop_data_traffic [2023-11-23 21:30:14,703 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_data_traffic [2023-11-23 21:30:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-23 21:30:14,703 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-23 21:30:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2023-11-23 21:30:14,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2023-11-23 21:30:14,704 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-23 21:30:14,704 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-23 21:30:14,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:30:14,704 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-23 21:30:14,704 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-23 21:30:14,704 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2023-11-23 21:30:14,705 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2023-11-23 21:30:14,705 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmset [2023-11-23 21:30:14,705 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmset [2023-11-23 21:30:14,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:30:14,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:30:14,705 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2023-11-23 21:30:14,705 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2023-11-23 21:30:14,705 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_bulk_callback [2023-11-23 21:30:14,706 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_bulk_callback [2023-11-23 21:30:14,706 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-23 21:30:14,706 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-23 21:30:15,440 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:30:15,447 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:30:15,734 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:30:16,646 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2023-11-23 21:30:25,700 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:30:27,266 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:30:27,267 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:30:27,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:27 BoogieIcfgContainer [2023-11-23 21:30:27,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:30:27,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:30:27,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:30:27,275 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:30:27,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:30:10" (1/3) ... [2023-11-23 21:30:27,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59edc58a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:30:27, skipping insertion in model container [2023-11-23 21:30:27,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:13" (2/3) ... [2023-11-23 21:30:27,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59edc58a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:30:27, skipping insertion in model container [2023-11-23 21:30:27,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:27" (3/3) ... [2023-11-23 21:30:27,281 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2023-11-23 21:30:27,301 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:30:27,301 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:30:27,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:30:27,412 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;@18173010, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:30:27,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:30:27,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 1298 states, 815 states have (on average 1.3533742331288343) internal successors, (1103), 851 states have internal predecessors, (1103), 397 states have call successors, (397), 86 states have call predecessors, (397), 84 states have return successors, (386), 378 states have call predecessors, (386), 386 states have call successors, (386) [2023-11-23 21:30:27,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 21:30:27,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:27,463 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:30:27,464 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:27,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:27,473 INFO L85 PathProgramCache]: Analyzing trace with hash 612371524, now seen corresponding path program 1 times [2023-11-23 21:30:27,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:27,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992805425] [2023-11-23 21:30:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:27,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 21:30:28,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:28,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992805425] [2023-11-23 21:30:28,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992805425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:28,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:28,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:30:28,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681312824] [2023-11-23 21:30:28,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:28,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:30:28,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:29,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:30:29,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:30:29,016 INFO L87 Difference]: Start difference. First operand has 1298 states, 815 states have (on average 1.3533742331288343) internal successors, (1103), 851 states have internal predecessors, (1103), 397 states have call successors, (397), 86 states have call predecessors, (397), 84 states have return successors, (386), 378 states have call predecessors, (386), 386 states have call successors, (386) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-23 21:30:32,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:30:35,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:30:36,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:30:38,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:30:39,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:39,260 INFO L93 Difference]: Finished difference Result 3790 states and 5558 transitions. [2023-11-23 21:30:39,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:30:39,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 110 [2023-11-23 21:30:39,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:39,327 INFO L225 Difference]: With dead ends: 3790 [2023-11-23 21:30:39,327 INFO L226 Difference]: Without dead ends: 2495 [2023-11-23 21:30:39,344 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 21:30:39,348 INFO L413 NwaCegarLoop]: 1710 mSDtfsCounter, 1789 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 3377 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:39,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 3377 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 373 Invalid, 3 Unknown, 0 Unchecked, 9.9s Time] [2023-11-23 21:30:39,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2023-11-23 21:30:39,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2492. [2023-11-23 21:30:39,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 1585 states have (on average 1.34006309148265) internal successors, (2124), 1626 states have internal predecessors, (2124), 740 states have call successors, (740), 167 states have call predecessors, (740), 166 states have return successors, (734), 718 states have call predecessors, (734), 734 states have call successors, (734) [2023-11-23 21:30:39,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3598 transitions. [2023-11-23 21:30:39,670 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3598 transitions. Word has length 110 [2023-11-23 21:30:39,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:39,673 INFO L495 AbstractCegarLoop]: Abstraction has 2492 states and 3598 transitions. [2023-11-23 21:30:39,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-23 21:30:39,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3598 transitions. [2023-11-23 21:30:39,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 21:30:39,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:39,686 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:30:39,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:30:39,690 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:39,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:39,691 INFO L85 PathProgramCache]: Analyzing trace with hash -2035971343, now seen corresponding path program 1 times [2023-11-23 21:30:39,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:39,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866654730] [2023-11-23 21:30:39,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:39,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 21:30:41,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:41,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866654730] [2023-11-23 21:30:41,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866654730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:41,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:41,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:30:41,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580670852] [2023-11-23 21:30:41,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:41,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:30:41,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:41,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:30:41,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:30:41,452 INFO L87 Difference]: Start difference. First operand 2492 states and 3598 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 21:30:44,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:30:46,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:30:49,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:30:51,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:30:54,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:30:56,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:30:56,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:56,137 INFO L93 Difference]: Finished difference Result 4739 states and 6829 transitions. [2023-11-23 21:30:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:30:56,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 121 [2023-11-23 21:30:56,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:56,182 INFO L225 Difference]: With dead ends: 4739 [2023-11-23 21:30:56,182 INFO L226 Difference]: Without dead ends: 4736 [2023-11-23 21:30:56,185 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 21:30:56,187 INFO L413 NwaCegarLoop]: 1672 mSDtfsCounter, 1638 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 3293 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:56,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1638 Valid, 3293 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 371 Invalid, 6 Unknown, 0 Unchecked, 14.4s Time] [2023-11-23 21:30:56,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4736 states. [2023-11-23 21:30:56,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4736 to 4723. [2023-11-23 21:30:56,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4723 states, 3019 states have (on average 1.3444849287843657) internal successors, (4059), 3096 states have internal predecessors, (4059), 1379 states have call successors, (1379), 327 states have call predecessors, (1379), 324 states have return successors, (1373), 1337 states have call predecessors, (1373), 1373 states have call successors, (1373) [2023-11-23 21:30:56,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4723 states to 4723 states and 6811 transitions. [2023-11-23 21:30:56,516 INFO L78 Accepts]: Start accepts. Automaton has 4723 states and 6811 transitions. Word has length 121 [2023-11-23 21:30:56,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:56,518 INFO L495 AbstractCegarLoop]: Abstraction has 4723 states and 6811 transitions. [2023-11-23 21:30:56,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 21:30:56,518 INFO L276 IsEmpty]: Start isEmpty. Operand 4723 states and 6811 transitions. [2023-11-23 21:30:56,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 21:30:56,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:56,530 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:30:56,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:30:56,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:56,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:56,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1308620058, now seen corresponding path program 1 times [2023-11-23 21:30:56,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:56,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857326679] [2023-11-23 21:30:56,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:56,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 21:30:57,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:57,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857326679] [2023-11-23 21:30:57,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857326679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:57,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:57,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:30:57,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149143857] [2023-11-23 21:30:57,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:57,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:30:57,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:57,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:30:57,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:30:57,836 INFO L87 Difference]: Start difference. First operand 4723 states and 6811 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18)