./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--host--ohci-hcd.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af885643-0077-454c-a670-1fc01636e217/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af885643-0077-454c-a670-1fc01636e217/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_af885643-0077-454c-a670-1fc01636e217/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af885643-0077-454c-a670-1fc01636e217/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--host--ohci-hcd.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af885643-0077-454c-a670-1fc01636e217/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_af885643-0077-454c-a670-1fc01636e217/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 4c74f17ad80d26d3384a467dad9313e9d7d1be91817d15d75e196d6ef78bc5b2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:30:59,541 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:30:59,690 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af885643-0077-454c-a670-1fc01636e217/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:30:59,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:30:59,698 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:30:59,734 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:30:59,735 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:30:59,736 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:30:59,737 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:30:59,738 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:30:59,738 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:30:59,739 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:30:59,739 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:30:59,741 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:30:59,745 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:30:59,745 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:30:59,746 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:30:59,746 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:30:59,747 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:30:59,747 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:30:59,748 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:30:59,748 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:30:59,749 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:30:59,750 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:30:59,750 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:30:59,750 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:30:59,751 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:30:59,751 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:30:59,752 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:30:59,752 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:30:59,753 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:30:59,754 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:30:59,754 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:30:59,754 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:30:59,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:30:59,755 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:30:59,755 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:30:59,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:30:59,755 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:30:59,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:30:59,756 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:30:59,756 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:30:59,756 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:30:59,757 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:30:59,757 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_af885643-0077-454c-a670-1fc01636e217/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af885643-0077-454c-a670-1fc01636e217/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c74f17ad80d26d3384a467dad9313e9d7d1be91817d15d75e196d6ef78bc5b2 [2023-11-23 21:31:00,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:31:00,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:31:00,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:31:00,118 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:31:00,118 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:31:00,120 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af885643-0077-454c-a670-1fc01636e217/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--ohci-hcd.ko-entry_point.cil.out.i [2023-11-23 21:31:03,118 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:31:03,842 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:31:03,843 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af885643-0077-454c-a670-1fc01636e217/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--ohci-hcd.ko-entry_point.cil.out.i [2023-11-23 21:31:03,914 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af885643-0077-454c-a670-1fc01636e217/bin/utaipan-verify-mE87zJ7Ire/data/1262247ad/1fc4f42122884bef93e108754d6f1cb2/FLAG10c94bee5 [2023-11-23 21:31:03,933 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af885643-0077-454c-a670-1fc01636e217/bin/utaipan-verify-mE87zJ7Ire/data/1262247ad/1fc4f42122884bef93e108754d6f1cb2 [2023-11-23 21:31:03,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:31:03,943 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:31:03,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:03,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:31:03,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:31:03,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:03" (1/1) ... [2023-11-23 21:31:03,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d06d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:03, skipping insertion in model container [2023-11-23 21:31:03,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:03" (1/1) ... [2023-11-23 21:31:04,137 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:31:06,671 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_af885643-0077-454c-a670-1fc01636e217/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--ohci-hcd.ko-entry_point.cil.out.i[315625,315638] [2023-11-23 21:31:06,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:06,789 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:31:06,893 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"); [3921] [2023-11-23 21:31:06,895 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [3928] [2023-11-23 21:31:06,916 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [4175] [2023-11-23 21:31:06,917 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [4182] [2023-11-23 21:31:07,181 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6885] [2023-11-23 21:31:07,182 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6888] [2023-11-23 21:31:07,184 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6918] [2023-11-23 21:31:07,185 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6939] [2023-11-23 21:31:07,187 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6965] [2023-11-23 21:31:07,193 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7072] [2023-11-23 21:31:07,211 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7271] [2023-11-23 21:31:07,216 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7400] [2023-11-23 21:31:07,218 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7422] [2023-11-23 21:31:07,220 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7472] [2023-11-23 21:31:07,227 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7612] [2023-11-23 21:31:07,244 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7729] [2023-11-23 21:31:07,248 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7845] [2023-11-23 21:31:07,396 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_af885643-0077-454c-a670-1fc01636e217/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--ohci-hcd.ko-entry_point.cil.out.i[315625,315638] [2023-11-23 21:31:07,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:07,507 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:31:07,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:07 WrapperNode [2023-11-23 21:31:07,508 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:07,509 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:07,509 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:31:07,509 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:31:07,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:07" (1/1) ... [2023-11-23 21:31:07,674 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:07" (1/1) ... [2023-11-23 21:31:08,071 INFO L138 Inliner]: procedures = 259, calls = 4523, calls flagged for inlining = 105, calls inlined = 100, statements flattened = 9675 [2023-11-23 21:31:08,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:08,072 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:31:08,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:31:08,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:31:08,083 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:07" (1/1) ... [2023-11-23 21:31:08,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:07" (1/1) ... [2023-11-23 21:31:08,141 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:07" (1/1) ... [2023-11-23 21:31:08,141 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:07" (1/1) ... [2023-11-23 21:31:08,477 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:07" (1/1) ... [2023-11-23 21:31:08,529 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:07" (1/1) ... [2023-11-23 21:31:08,570 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:07" (1/1) ... [2023-11-23 21:31:08,606 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:07" (1/1) ... [2023-11-23 21:31:08,663 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:31:08,664 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:31:08,665 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:31:08,665 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:31:08,666 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:07" (1/1) ... [2023-11-23 21:31:08,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:08,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af885643-0077-454c-a670-1fc01636e217/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:31:08,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af885643-0077-454c-a670-1fc01636e217/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:31:08,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af885643-0077-454c-a670-1fc01636e217/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:31:08,816 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_to_ohci [2023-11-23 21:31:08,816 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_to_ohci [2023-11-23 21:31:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-23 21:31:08,817 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-23 21:31:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure start_ed_unlink [2023-11-23 21:31:08,817 INFO L138 BoogieDeclarations]: Found implementation of procedure start_ed_unlink [2023-11-23 21:31:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_status [2023-11-23 21:31:08,818 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_status [2023-11-23 21:31:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:31:08,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:31:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:31:08,819 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:31:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2023-11-23 21:31:08,822 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2023-11-23 21:31:08,822 INFO L130 BoogieDeclarations]: Found specification of procedure show_list [2023-11-23 21:31:08,822 INFO L138 BoogieDeclarations]: Found implementation of procedure show_list [2023-11-23 21:31:08,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-23 21:31:08,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-23 21:31:08,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:31:08,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:31:08,824 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2023-11-23 21:31:08,824 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2023-11-23 21:31:08,824 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpup [2023-11-23 21:31:08,824 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpup [2023-11-23 21:31:08,824 INFO L130 BoogieDeclarations]: Found specification of procedure hcfs2string [2023-11-23 21:31:08,824 INFO L138 BoogieDeclarations]: Found implementation of procedure hcfs2string [2023-11-23 21:31:08,825 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_zfmicro [2023-11-23 21:31:08,825 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_zfmicro [2023-11-23 21:31:08,825 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_hub_status_data [2023-11-23 21:31:08,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_hub_status_data [2023-11-23 21:31:08,825 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_shutdown [2023-11-23 21:31:08,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_shutdown [2023-11-23 21:31:08,826 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:31:08,826 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:31:08,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:31:08,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:31:08,826 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump_intr_mask [2023-11-23 21:31:08,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump_intr_mask [2023-11-23 21:31:08,827 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_buffer [2023-11-23 21:31:08,827 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_buffer [2023-11-23 21:31:08,827 INFO L130 BoogieDeclarations]: Found specification of procedure _ohci_writel [2023-11-23 21:31:08,827 INFO L138 BoogieDeclarations]: Found implementation of procedure _ohci_writel [2023-11-23 21:31:08,827 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-23 21:31:08,828 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-23 21:31:08,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:31:08,829 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:31:08,829 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_hwPSWp [2023-11-23 21:31:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_hwPSWp [2023-11-23 21:31:08,830 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:31:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:31:08,830 INFO L130 BoogieDeclarations]: Found specification of procedure debug_output [2023-11-23 21:31:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_output [2023-11-23 21:31:08,830 INFO L130 BoogieDeclarations]: Found specification of procedure ed_schedule [2023-11-23 21:31:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ed_schedule [2023-11-23 21:31:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2023-11-23 21:31:08,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2023-11-23 21:31:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump_roothub [2023-11-23 21:31:08,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump_roothub [2023-11-23 21:31:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:31:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_stop [2023-11-23 21:31:08,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_stop [2023-11-23 21:31:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 21:31:08,834 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 21:31:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:31:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2023-11-23 21:31:08,834 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2023-11-23 21:31:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-23 21:31:08,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-23 21:31:08,835 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_nec [2023-11-23 21:31:08,835 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_nec [2023-11-23 21:31:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_restart [2023-11-23 21:31:08,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_restart [2023-11-23 21:31:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:31:08,836 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:31:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2023-11-23 21:31:08,836 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2023-11-23 21:31:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure update_done_list [2023-11-23 21:31:08,837 INFO L138 BoogieDeclarations]: Found implementation of procedure update_done_list [2023-11-23 21:31:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure td_free [2023-11-23 21:31:08,837 INFO L138 BoogieDeclarations]: Found implementation of procedure td_free [2023-11-23 21:31:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:31:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_rh_resume [2023-11-23 21:31:08,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_rh_resume [2023-11-23 21:31:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:31:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_portstatus [2023-11-23 21:31:08,838 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_portstatus [2023-11-23 21:31:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hc_died [2023-11-23 21:31:08,838 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hc_died [2023-11-23 21:31:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2023-11-23 21:31:08,838 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2023-11-23 21:31:08,839 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:31:08,839 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:31:08,839 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-23 21:31:08,839 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-23 21:31:08,840 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2023-11-23 21:31:08,840 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2023-11-23 21:31:08,840 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 21:31:08,840 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 21:31:08,841 INFO L130 BoogieDeclarations]: Found specification of procedure ed_free [2023-11-23 21:31:08,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ed_free [2023-11-23 21:31:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 21:31:08,842 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 21:31:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_start [2023-11-23 21:31:08,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_start [2023-11-23 21:31:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump [2023-11-23 21:31:08,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump [2023-11-23 21:31:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_setup [2023-11-23 21:31:08,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_setup [2023-11-23 21:31:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_frame_no [2023-11-23 21:31:08,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_frame_no [2023-11-23 21:31:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-23 21:31:08,844 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-23 21:31:08,844 INFO L130 BoogieDeclarations]: Found specification of procedure sb800_prefetch [2023-11-23 21:31:08,844 INFO L138 BoogieDeclarations]: Found implementation of procedure sb800_prefetch [2023-11-23 21:31:08,844 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2023-11-23 21:31:08,844 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2023-11-23 21:31:08,844 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_hub_control [2023-11-23 21:31:08,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_hub_control [2023-11-23 21:31:08,845 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_unlink_urb_from_ep [2023-11-23 21:31:08,845 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_unlink_urb_from_ep [2023-11-23 21:31:08,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:31:08,845 INFO L130 BoogieDeclarations]: Found specification of procedure finish_urb [2023-11-23 21:31:08,846 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_urb [2023-11-23 21:31:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2023-11-23 21:31:08,846 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2023-11-23 21:31:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_rh_suspend [2023-11-23 21:31:08,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_rh_suspend [2023-11-23 21:31:08,848 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_a [2023-11-23 21:31:08,848 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_a [2023-11-23 21:31:08,849 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_irq [2023-11-23 21:31:08,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_irq [2023-11-23 21:31:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure rh_state_string [2023-11-23 21:31:08,851 INFO L138 BoogieDeclarations]: Found implementation of procedure rh_state_string [2023-11-23 21:31:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_b [2023-11-23 21:31:08,851 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_b [2023-11-23 21:31:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_urb_enqueue [2023-11-23 21:31:08,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_urb_enqueue [2023-11-23 21:31:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_start_port_reset [2023-11-23 21:31:08,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_start_port_reset [2023-11-23 21:31:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_to_hcd [2023-11-23 21:31:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_to_hcd [2023-11-23 21:31:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-23 21:31:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-23 21:31:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure td_alloc [2023-11-23 21:31:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure td_alloc [2023-11-23 21:31:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure find_head [2023-11-23 21:31:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure find_head [2023-11-23 21:31:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2023-11-23 21:31:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2023-11-23 21:31:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:31:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:31:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_run [2023-11-23 21:31:08,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_run [2023-11-23 21:31:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2023-11-23 21:31:08,853 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2023-11-23 21:31:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_endpoint_disable [2023-11-23 21:31:08,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_endpoint_disable [2023-11-23 21:31:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:31:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 21:31:08,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 21:31:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_amdprefetch [2023-11-23 21:31:08,854 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_amdprefetch [2023-11-23 21:31:08,854 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-23 21:31:08,854 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-23 21:31:08,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:31:08,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:31:08,854 INFO L130 BoogieDeclarations]: Found specification of procedure sg_next [2023-11-23 21:31:08,854 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_next [2023-11-23 21:31:08,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:31:08,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:31:08,854 INFO L130 BoogieDeclarations]: Found specification of procedure add_to_done_list [2023-11-23 21:31:08,855 INFO L138 BoogieDeclarations]: Found implementation of procedure add_to_done_list [2023-11-23 21:31:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure _ohci_readl [2023-11-23 21:31:08,855 INFO L138 BoogieDeclarations]: Found implementation of procedure _ohci_readl [2023-11-23 21:31:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:31:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2023-11-23 21:31:08,855 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2023-11-23 21:31:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_poll_rh_status [2023-11-23 21:31:08,855 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_poll_rh_status [2023-11-23 21:31:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 21:31:08,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 21:31:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-23 21:31:08,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-23 21:31:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:31:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_reinit [2023-11-23 21:31:08,856 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_reinit [2023-11-23 21:31:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2023-11-23 21:31:08,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2023-11-23 21:31:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 21:31:08,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 21:31:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:31:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure td_done [2023-11-23 21:31:08,857 INFO L138 BoogieDeclarations]: Found implementation of procedure td_done [2023-11-23 21:31:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure td_fill [2023-11-23 21:31:08,857 INFO L138 BoogieDeclarations]: Found implementation of procedure td_fill [2023-11-23 21:31:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_urb_dequeue [2023-11-23 21:31:08,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_urb_dequeue [2023-11-23 21:31:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_init [2023-11-23 21:31:08,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_init [2023-11-23 21:31:08,858 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-23 21:31:08,858 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-23 21:31:08,858 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_work [2023-11-23 21:31:08,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_work [2023-11-23 21:31:08,858 INFO L130 BoogieDeclarations]: Found specification of procedure scnprintf [2023-11-23 21:31:08,858 INFO L138 BoogieDeclarations]: Found implementation of procedure scnprintf [2023-11-23 21:31:08,858 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_amdiso [2023-11-23 21:31:08,858 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_amdiso [2023-11-23 21:31:08,859 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2023-11-23 21:31:08,859 INFO L138 BoogieDeclarations]: Found implementation of procedure default_llseek [2023-11-23 21:31:08,859 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-11-23 21:31:08,859 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-11-23 21:31:08,859 INFO L130 BoogieDeclarations]: Found specification of procedure ed_deschedule [2023-11-23 21:31:08,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ed_deschedule [2023-11-23 21:31:08,859 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_resume_root_hub [2023-11-23 21:31:08,859 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_resume_root_hub [2023-11-23 21:31:08,860 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-23 21:31:08,860 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-23 21:31:08,860 INFO L130 BoogieDeclarations]: Found specification of procedure urb_free_priv [2023-11-23 21:31:08,860 INFO L138 BoogieDeclarations]: Found implementation of procedure urb_free_priv [2023-11-23 21:31:08,860 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpu [2023-11-23 21:31:08,860 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpu [2023-11-23 21:31:08,860 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump_status [2023-11-23 21:31:08,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump_status [2023-11-23 21:31:08,860 INFO L130 BoogieDeclarations]: Found specification of procedure maybe_print_eds [2023-11-23 21:31:08,861 INFO L138 BoogieDeclarations]: Found implementation of procedure maybe_print_eds [2023-11-23 21:31:08,861 INFO L130 BoogieDeclarations]: Found specification of procedure debug_close [2023-11-23 21:31:08,861 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_close [2023-11-23 21:31:08,861 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_get_frame [2023-11-23 21:31:08,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_get_frame [2023-11-23 21:31:08,861 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 21:31:08,861 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 21:31:08,861 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-11-23 21:31:08,861 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-11-23 21:31:08,862 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_to_hc32 [2023-11-23 21:31:08,862 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_to_hc32 [2023-11-23 21:31:08,862 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 21:31:08,862 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 21:31:08,862 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_usb_reset [2023-11-23 21:31:08,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_usb_reset [2023-11-23 21:31:08,862 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_bus_resume [2023-11-23 21:31:08,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_bus_resume [2023-11-23 21:31:08,862 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-23 21:31:08,863 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-23 21:31:08,863 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_bus_suspend [2023-11-23 21:31:08,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_bus_suspend [2023-11-23 21:31:08,863 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-23 21:31:08,863 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-23 21:31:08,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:31:08,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:31:08,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:31:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2023-11-23 21:31:08,864 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2023-11-23 21:31:09,922 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:31:09,931 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:31:10,651 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:31:20,449 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:31:27,346 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:31:27,346 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 21:31:27,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:27 BoogieIcfgContainer [2023-11-23 21:31:27,349 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:31:27,352 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:31:27,352 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:31:27,357 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:31:27,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:31:03" (1/3) ... [2023-11-23 21:31:27,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7407a6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:27, skipping insertion in model container [2023-11-23 21:31:27,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:07" (2/3) ... [2023-11-23 21:31:27,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7407a6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:27, skipping insertion in model container [2023-11-23 21:31:27,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:27" (3/3) ... [2023-11-23 21:31:27,365 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--ohci-hcd.ko-entry_point.cil.out.i [2023-11-23 21:31:27,392 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:31:27,392 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:31:27,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:31:27,571 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;@1583d4d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:31:27,572 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:31:27,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 2546 states, 1587 states have (on average 1.3371140516698172) internal successors, (2122), 1657 states have internal predecessors, (2122), 842 states have call successors, (842), 120 states have call predecessors, (842), 119 states have return successors, (835), 828 states have call predecessors, (835), 835 states have call successors, (835) [2023-11-23 21:31:27,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-11-23 21:31:27,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:27,624 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:27,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:27,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:27,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2120672385, now seen corresponding path program 1 times [2023-11-23 21:31:27,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:27,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952306495] [2023-11-23 21:31:27,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:27,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-23 21:31:29,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:31:29,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952306495] [2023-11-23 21:31:29,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952306495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:29,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:29,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:31:29,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034766341] [2023-11-23 21:31:29,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:29,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:29,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:31:29,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:29,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:29,617 INFO L87 Difference]: Start difference. First operand has 2546 states, 1587 states have (on average 1.3371140516698172) internal successors, (2122), 1657 states have internal predecessors, (2122), 842 states have call successors, (842), 120 states have call predecessors, (842), 119 states have return successors, (835), 828 states have call predecessors, (835), 835 states have call successors, (835) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-23 21:31:31,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:31:36,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:31:39,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:39,169 INFO L93 Difference]: Finished difference Result 7479 states and 11265 transitions. [2023-11-23 21:31:39,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:31:39,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 270 [2023-11-23 21:31:39,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:39,282 INFO L225 Difference]: With dead ends: 7479 [2023-11-23 21:31:39,282 INFO L226 Difference]: Without dead ends: 4963 [2023-11-23 21:31:39,327 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 21:31:39,333 INFO L413 NwaCegarLoop]: 3394 mSDtfsCounter, 3729 mSDsluCounter, 3306 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3729 SdHoareTripleChecker+Valid, 6700 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:39,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3729 Valid, 6700 Invalid, 767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 764 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2023-11-23 21:31:39,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4963 states. [2023-11-23 21:31:40,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4963 to 4959. [2023-11-23 21:31:40,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4959 states, 3098 states have (on average 1.3334409296320207) internal successors, (4131), 3221 states have internal predecessors, (4131), 1625 states have call successors, (1625), 236 states have call predecessors, (1625), 235 states have return successors, (1624), 1609 states have call predecessors, (1624), 1624 states have call successors, (1624) [2023-11-23 21:31:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4959 states to 4959 states and 7380 transitions. [2023-11-23 21:31:40,240 INFO L78 Accepts]: Start accepts. Automaton has 4959 states and 7380 transitions. Word has length 270 [2023-11-23 21:31:40,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:40,246 INFO L495 AbstractCegarLoop]: Abstraction has 4959 states and 7380 transitions. [2023-11-23 21:31:40,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-23 21:31:40,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4959 states and 7380 transitions. [2023-11-23 21:31:40,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-11-23 21:31:40,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:40,262 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:40,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:31:40,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:40,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:40,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1098068422, now seen corresponding path program 1 times [2023-11-23 21:31:40,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:40,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930088921] [2023-11-23 21:31:40,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:40,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-23 21:31:41,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:31:41,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930088921] [2023-11-23 21:31:41,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930088921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:41,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:41,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:31:41,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877385310] [2023-11-23 21:31:41,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:41,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:41,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:31:41,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:41,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:41,483 INFO L87 Difference]: Start difference. First operand 4959 states and 7380 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-23 21:31:43,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []