./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--misc--ftdi-elan.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_dcb007e0-2728-4a98-9676-be0ee5ac35d8/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb007e0-2728-4a98-9676-be0ee5ac35d8/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_dcb007e0-2728-4a98-9676-be0ee5ac35d8/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb007e0-2728-4a98-9676-be0ee5ac35d8/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--misc--ftdi-elan.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb007e0-2728-4a98-9676-be0ee5ac35d8/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_dcb007e0-2728-4a98-9676-be0ee5ac35d8/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 41a06dba17575946a131560ceaa3b40649c8b00d9b30bc4696c27d89715c52b3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:09:04,504 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:09:04,620 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb007e0-2728-4a98-9676-be0ee5ac35d8/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:09:04,628 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:09:04,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:09:04,668 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:09:04,669 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:09:04,670 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:09:04,671 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:09:04,676 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:09:04,676 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:09:04,677 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:09:04,677 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:09:04,679 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:09:04,679 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:09:04,680 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:09:04,680 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:09:04,681 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:09:04,681 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:09:04,682 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:09:04,683 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:09:04,684 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:09:04,685 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:09:04,685 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:09:04,686 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:09:04,686 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:09:04,687 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:09:04,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:09:04,688 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:09:04,688 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:09:04,689 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:09:04,690 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:09:04,690 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:09:04,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:09:04,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:04,691 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:09:04,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:09:04,691 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:09:04,692 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:09:04,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:09:04,692 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:09:04,693 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:09:04,693 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:09:04,693 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:09:04,694 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_dcb007e0-2728-4a98-9676-be0ee5ac35d8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb007e0-2728-4a98-9676-be0ee5ac35d8/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41a06dba17575946a131560ceaa3b40649c8b00d9b30bc4696c27d89715c52b3 [2023-11-23 21:09:05,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:09:05,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:09:05,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:09:05,044 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:09:05,045 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:09:05,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb007e0-2728-4a98-9676-be0ee5ac35d8/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i [2023-11-23 21:09:08,306 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:09:08,895 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:09:08,896 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb007e0-2728-4a98-9676-be0ee5ac35d8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i [2023-11-23 21:09:08,949 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb007e0-2728-4a98-9676-be0ee5ac35d8/bin/utaipan-verify-mE87zJ7Ire/data/e71842166/da60f9ecba1240699aec7195747e518a/FLAG87617a49f [2023-11-23 21:09:09,367 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb007e0-2728-4a98-9676-be0ee5ac35d8/bin/utaipan-verify-mE87zJ7Ire/data/e71842166/da60f9ecba1240699aec7195747e518a [2023-11-23 21:09:09,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:09:09,373 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:09:09,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:09,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:09:09,381 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:09:09,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:09" (1/1) ... [2023-11-23 21:09:09,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13518bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:09, skipping insertion in model container [2023-11-23 21:09:09,383 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:09" (1/1) ... [2023-11-23 21:09:09,547 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:09:11,787 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_dcb007e0-2728-4a98-9676-be0ee5ac35d8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i[263943,263956] [2023-11-23 21:09:11,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:11,915 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:09:12,080 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; subl %2, %0; sete %1": "+m" (v->counter), "=qm" (c): "er" (i): "memory"); [3725-3726] [2023-11-23 21:09:12,083 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; xaddb %b0, %1\n": "+q" (__ret), "+m" (v->counter): : "memory", "cc"); [3737-3738] [2023-11-23 21:09:12,084 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"); [3741-3742] [2023-11-23 21:09:12,085 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"); [3745-3746] [2023-11-23 21:09:12,085 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"); [3749-3750] [2023-11-23 21:09:12,423 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_dcb007e0-2728-4a98-9676-be0ee5ac35d8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i[263943,263956] [2023-11-23 21:09:12,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:12,584 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,584 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,592 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:09:12,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12 WrapperNode [2023-11-23 21:09:12,593 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:12,594 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:12,594 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:09:12,594 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:09:12,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,718 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,897 INFO L138 Inliner]: procedures = 267, calls = 2900, calls flagged for inlining = 122, calls inlined = 113, statements flattened = 6785 [2023-11-23 21:09:12,897 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:12,898 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:09:12,898 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:09:12,898 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:09:12,908 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,990 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:13,240 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:13,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:13,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:13,346 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:13,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:09:13,391 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:09:13,391 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:09:13,391 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:09:13,392 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:13,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:13,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb007e0-2728-4a98-9676-be0ee5ac35d8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:13,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb007e0-2728-4a98-9676-be0ee5ac35d8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:09:13,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb007e0-2728-4a98-9676-be0ee5ac35d8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:09:13,479 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-23 21:09:13,480 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-23 21:09:13,480 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-23 21:09:13,480 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-23 21:09:13,480 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2023-11-23 21:09:13,480 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2023-11-23 21:09:13,480 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_kick_command_queue [2023-11-23 21:09:13,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_kick_command_queue [2023-11-23 21:09:13,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:09:13,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:09:13,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:09:13,481 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:09:13,481 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_flush_input_fifo [2023-11-23 21:09:13,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_flush_input_fifo [2023-11-23 21:09:13,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:09:13,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:09:13,482 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2023-11-23 21:09:13,482 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2023-11-23 21:09:13,483 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_read_config [2023-11-23 21:09:13,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_read_config [2023-11-23 21:09:13,483 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2023-11-23 21:09:13,484 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2023-11-23 21:09:13,484 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2023-11-23 21:09:13,484 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2023-11-23 21:09:13,485 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2023-11-23 21:09:13,485 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2023-11-23 21:09:13,485 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:09:13,486 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:09:13,486 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-23 21:09:13,486 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-23 21:09:13,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:09:13,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:09:13,487 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2023-11-23 21:09:13,487 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2023-11-23 21:09:13,487 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:09:13,487 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:09:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_status_work [2023-11-23 21:09:13,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_status_work [2023-11-23 21:09:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_response_cancel_work [2023-11-23 21:09:13,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_response_cancel_work [2023-11-23 21:09:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:09:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 21:09:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 21:09:13,488 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 21:09:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-11-23 21:09:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-11-23 21:09:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure up [2023-11-23 21:09:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2023-11-23 21:09:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_get_kref [2023-11-23 21:09:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_get_kref [2023-11-23 21:09:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:09:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-11-23 21:09:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2023-11-23 21:09:13,490 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2023-11-23 21:09:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2023-11-23 21:09:13,491 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2023-11-23 21:09:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_status_cancel_work [2023-11-23 21:09:13,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_status_cancel_work [2023-11-23 21:09:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:09:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2023-11-23 21:09:13,492 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2023-11-23 21:09:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:09:13,493 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_cancel_work [2023-11-23 21:09:13,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_cancel_work [2023-11-23 21:09:13,493 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:09:13,493 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:09:13,493 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:09:13,494 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:09:13,494 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2023-11-23 21:09:13,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2023-11-23 21:09:13,494 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-11-23 21:09:13,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-11-23 21:09:13,494 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 21:09:13,494 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 21:09:13,494 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_do_callback [2023-11-23 21:09:13,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_do_callback [2023-11-23 21:09:13,495 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_requeue_work [2023-11-23 21:09:13,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_requeue_work [2023-11-23 21:09:13,495 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 21:09:13,496 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 21:09:13,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_45 [2023-11-23 21:09:13,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_45 [2023-11-23 21:09:13,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_44 [2023-11-23 21:09:13,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_44 [2023-11-23 21:09:13,496 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-23 21:09:13,497 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-23 21:09:13,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_43 [2023-11-23 21:09:13,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_43 [2023-11-23 21:09:13,497 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-11-23 21:09:13,497 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-11-23 21:09:13,497 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2023-11-23 21:09:13,497 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2023-11-23 21:09:13,497 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_found_controller [2023-11-23 21:09:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_found_controller [2023-11-23 21:09:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_setup_controller [2023-11-23 21:09:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_setup_controller [2023-11-23 21:09:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_gone_away [2023-11-23 21:09:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_gone_away [2023-11-23 21:09:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write_config [2023-11-23 21:09:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write_config [2023-11-23 21:09:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_respond_work [2023-11-23 21:09:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_respond_work [2023-11-23 21:09:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:09:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-23 21:09:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-23 21:09:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_status_requeue_work [2023-11-23 21:09:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_status_requeue_work [2023-11-23 21:09:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2023-11-23 21:09:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2023-11-23 21:09:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2023-11-23 21:09:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2023-11-23 21:09:13,501 INFO L130 BoogieDeclarations]: Found specification of procedure __alloc_workqueue_key [2023-11-23 21:09:13,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __alloc_workqueue_key [2023-11-23 21:09:13,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:09:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-11-23 21:09:13,502 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-11-23 21:09:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_read_reg [2023-11-23 21:09:13,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_read_reg [2023-11-23 21:09:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_disconnect [2023-11-23 21:09:13,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_disconnect [2023-11-23 21:09:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_respond_queue_work [2023-11-23 21:09:13,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_respond_queue_work [2023-11-23 21:09:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write [2023-11-23 21:09:13,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write [2023-11-23 21:09:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-23 21:09:13,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-23 21:09:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-23 21:09:13,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-23 21:09:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_abandon_completions [2023-11-23 21:09:13,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_abandon_completions [2023-11-23 21:09:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2023-11-23 21:09:13,505 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2023-11-23 21:09:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:09:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2023-11-23 21:09:13,505 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2023-11-23 21:09:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:09:13,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:09:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_command_work [2023-11-23 21:09:13,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_command_work [2023-11-23 21:09:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:09:13,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:09:13,509 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_put_kref [2023-11-23 21:09:13,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_put_kref [2023-11-23 21:09:13,511 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_abandon_targets [2023-11-23 21:09:13,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_abandon_targets [2023-11-23 21:09:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:09:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write_pcimem [2023-11-23 21:09:13,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write_pcimem [2023-11-23 21:09:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 21:09:13,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 21:09:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2023-11-23 21:09:13,519 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2023-11-23 21:09:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:09:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2023-11-23 21:09:13,521 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2023-11-23 21:09:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:09:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_response_requeue_work [2023-11-23 21:09:13,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_response_requeue_work [2023-11-23 21:09:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:09:13,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:09:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_queue_work [2023-11-23 21:09:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_queue_work [2023-11-23 21:09:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-23 21:09:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-23 21:09:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_read_pcimem [2023-11-23 21:09:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_read_pcimem [2023-11-23 21:09:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2023-11-23 21:09:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2023-11-23 21:09:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2023-11-23 21:09:13,523 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2023-11-23 21:09:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-11-23 21:09:13,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-11-23 21:09:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 21:09:13,524 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 21:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-11-23 21:09:13,524 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-11-23 21:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write_reg [2023-11-23 21:09:13,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write_reg [2023-11-23 21:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2023-11-23 21:09:13,524 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2023-11-23 21:09:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:09:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:09:13,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:09:14,275 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:09:14,279 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:09:15,324 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:09:29,389 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:09:31,441 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:09:31,442 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:09:31,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:31 BoogieIcfgContainer [2023-11-23 21:09:31,445 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:09:31,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:09:31,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:09:31,451 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:09:31,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:09:09" (1/3) ... [2023-11-23 21:09:31,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a1150b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:31, skipping insertion in model container [2023-11-23 21:09:31,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (2/3) ... [2023-11-23 21:09:31,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a1150b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:31, skipping insertion in model container [2023-11-23 21:09:31,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:31" (3/3) ... [2023-11-23 21:09:31,457 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i [2023-11-23 21:09:31,479 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:09:31,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:09:31,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:09:31,623 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;@2201dcc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:09:31,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:09:31,666 INFO L276 IsEmpty]: Start isEmpty. Operand has 1499 states, 931 states have (on average 1.406015037593985) internal successors, (1309), 983 states have internal predecessors, (1309), 483 states have call successors, (483), 84 states have call predecessors, (483), 83 states have return successors, (476), 462 states have call predecessors, (476), 476 states have call successors, (476) [2023-11-23 21:09:31,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 21:09:31,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:31,696 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:31,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:31,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:31,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1404362106, now seen corresponding path program 1 times [2023-11-23 21:09:31,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:31,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662675799] [2023-11-23 21:09:31,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:31,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:32,909 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-23 21:09:32,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:32,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662675799] [2023-11-23 21:09:32,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662675799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:32,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:32,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:09:32,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658212359] [2023-11-23 21:09:32,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:32,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:32,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:32,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:32,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:32,955 INFO L87 Difference]: Start difference. First operand has 1499 states, 931 states have (on average 1.406015037593985) internal successors, (1309), 983 states have internal predecessors, (1309), 483 states have call successors, (483), 84 states have call predecessors, (483), 83 states have return successors, (476), 462 states have call predecessors, (476), 476 states have call successors, (476) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 21:09:37,392 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 21:09:39,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:09:41,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:09:42,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:42,064 INFO L93 Difference]: Finished difference Result 4304 states and 6675 transitions. [2023-11-23 21:09:42,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:42,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 93 [2023-11-23 21:09:42,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:42,111 INFO L225 Difference]: With dead ends: 4304 [2023-11-23 21:09:42,111 INFO L226 Difference]: Without dead ends: 2807 [2023-11-23 21:09:42,135 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 21:09:42,139 INFO L413 NwaCegarLoop]: 2119 mSDtfsCounter, 2079 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2079 SdHoareTripleChecker+Valid, 4120 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:42,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2079 Valid, 4120 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 379 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2023-11-23 21:09:42,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2023-11-23 21:09:42,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2804. [2023-11-23 21:09:42,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2804 states, 1766 states have (on average 1.406568516421291) internal successors, (2484), 1851 states have internal predecessors, (2484), 880 states have call successors, (880), 158 states have call predecessors, (880), 157 states have return successors, (878), 850 states have call predecessors, (878), 878 states have call successors, (878) [2023-11-23 21:09:42,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 4242 transitions. [2023-11-23 21:09:42,449 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 4242 transitions. Word has length 93 [2023-11-23 21:09:42,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:42,450 INFO L495 AbstractCegarLoop]: Abstraction has 2804 states and 4242 transitions. [2023-11-23 21:09:42,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 21:09:42,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 4242 transitions. [2023-11-23 21:09:42,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-23 21:09:42,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:42,466 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2023-11-23 21:09:42,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:09:42,467 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:42,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:42,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1835199960, now seen corresponding path program 1 times [2023-11-23 21:09:42,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:42,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056974357] [2023-11-23 21:09:42,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:42,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:43,186 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-23 21:09:43,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:43,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056974357] [2023-11-23 21:09:43,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056974357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:43,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:43,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:09:43,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996886520] [2023-11-23 21:09:43,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:43,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:43,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:43,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:43,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:43,191 INFO L87 Difference]: Start difference. First operand 2804 states and 4242 transitions. 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 21:09:48,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:09:51,420 WARN L539 Checker$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 21:09:53,430 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 21:09:54,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:54,697 INFO L93 Difference]: Finished difference Result 8186 states and 12372 transitions. [2023-11-23 21:09:54,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:54,698 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 100 [2023-11-23 21:09:54,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:54,751 INFO L225 Difference]: With dead ends: 8186 [2023-11-23 21:09:54,751 INFO L226 Difference]: Without dead ends: 5404 [2023-11-23 21:09:54,781 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 21:09:54,782 INFO L413 NwaCegarLoop]: 2058 mSDtfsCounter, 2090 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2090 SdHoareTripleChecker+Valid, 4074 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:54,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2090 Valid, 4074 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 386 Invalid, 3 Unknown, 0 Unchecked, 11.2s Time] [2023-11-23 21:09:54,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2023-11-23 21:09:55,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 5401. [2023-11-23 21:09:55,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5401 states, 3395 states have (on average 1.4044182621502208) internal successors, (4768), 3561 states have internal predecessors, (4768), 1696 states have call successors, (1696), 310 states have call predecessors, (1696), 309 states have return successors, (1693), 1637 states have call predecessors, (1693), 1693 states have call successors, (1693) [2023-11-23 21:09:55,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5401 states to 5401 states and 8157 transitions. [2023-11-23 21:09:55,209 INFO L78 Accepts]: Start accepts. Automaton has 5401 states and 8157 transitions. Word has length 100 [2023-11-23 21:09:55,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:55,210 INFO L495 AbstractCegarLoop]: Abstraction has 5401 states and 8157 transitions. [2023-11-23 21:09:55,210 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 21:09:55,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5401 states and 8157 transitions. [2023-11-23 21:09:55,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-23 21:09:55,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:55,214 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2023-11-23 21:09:55,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:09:55,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:55,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:55,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2089417347, now seen corresponding path program 1 times [2023-11-23 21:09:55,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:55,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680250700] [2023-11-23 21:09:55,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:55,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:56,447 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-23 21:09:56,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:56,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680250700] [2023-11-23 21:09:56,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680250700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:56,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:56,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:09:56,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828969337] [2023-11-23 21:09:56,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:56,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:09:56,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:56,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:09:56,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:09:56,453 INFO L87 Difference]: Start difference. First operand 5401 states and 8157 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 21:09:58,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:09:59,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []