./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_748eb029-63fb-4558-b049-b75a83990061/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_748eb029-63fb-4558-b049-b75a83990061/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_748eb029-63fb-4558-b049-b75a83990061/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_748eb029-63fb-4558-b049-b75a83990061/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_748eb029-63fb-4558-b049-b75a83990061/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_748eb029-63fb-4558-b049-b75a83990061/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --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 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:56:13,438 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:56:13,583 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_748eb029-63fb-4558-b049-b75a83990061/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-06 20:56:13,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:56:13,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:56:13,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:56:13,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:56:13,645 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:56:13,646 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:56:13,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:56:13,653 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:56:13,654 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:56:13,655 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:56:13,657 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:56:13,658 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:56:13,658 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:56:13,659 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:56:13,660 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:56:13,660 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:56:13,661 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:56:13,662 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:56:13,662 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:56:13,664 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:56:13,665 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 20:56:13,665 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:56:13,666 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:56:13,666 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 20:56:13,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:56:13,668 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 20:56:13,668 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 20:56:13,670 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:56:13,671 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:56:13,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:56:13,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:56:13,672 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:56:13,672 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:56:13,673 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 20:56:13,673 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:56:13,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:56:13,674 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 20:56:13,674 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:56:13,675 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:56:13,675 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_748eb029-63fb-4558-b049-b75a83990061/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_748eb029-63fb-4558-b049-b75a83990061/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2023-11-06 20:56:14,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:56:14,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:56:14,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:56:14,082 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:56:14,084 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:56:14,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_748eb029-63fb-4558-b049-b75a83990061/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2023-11-06 20:56:17,533 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:56:18,064 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:56:18,067 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_748eb029-63fb-4558-b049-b75a83990061/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2023-11-06 20:56:18,116 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_748eb029-63fb-4558-b049-b75a83990061/bin/utaipan-verify-FOvIYxoinp/data/bf68e6f12/733cad6df66a43808caa0c632c1a69b7/FLAG56796faee [2023-11-06 20:56:18,139 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_748eb029-63fb-4558-b049-b75a83990061/bin/utaipan-verify-FOvIYxoinp/data/bf68e6f12/733cad6df66a43808caa0c632c1a69b7 [2023-11-06 20:56:18,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:56:18,146 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:56:18,150 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:56:18,151 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:56:18,157 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:56:18,157 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:56:18" (1/1) ... [2023-11-06 20:56:18,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a944761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:18, skipping insertion in model container [2023-11-06 20:56:18,159 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:56:18" (1/1) ... [2023-11-06 20:56:18,283 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:56:19,726 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_748eb029-63fb-4558-b049-b75a83990061/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2023-11-06 20:56:19,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:56:19,849 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:56:19,981 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n" ".balign 4\n" ".long 671f - .\n" ".previous\n" "671:" "\n\tlock; " "bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [4831-4837] [2023-11-06 20:56:19,984 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n" ".balign 4\n" ".long 671f - .\n" ".previous\n" "671:" "\n\tlock; " "btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [4844-4850] [2023-11-06 20:56:19,986 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n" ".balign 4\n" ".long 671f - .\n" ".previous\n" "671:" "\n\tlock; " "btr %2,%1\n\t" "sbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [4857-4864] [2023-11-06 20:56:19,989 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n" ".balign 4\n" ".long 671f - .\n" ".previous\n" "671:" "\n\tlock; " "incl %0": "+m" (v->counter)); [4894-4900] [2023-11-06 20:56:19,990 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n" ".balign 4\n" ".long 671f - .\n" ".previous\n" "671:" "\n\tlock; " "decl %0": "+m" (v->counter)); [4907-4913] [2023-11-06 20:56:20,141 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n" ".pushsection __bug_table,\"a\"\n" "2:\t.long 1b - 2b, %c0 - 2b\n" "\t.word %c1, 0\n" "\t.org 2b+%c2\n" ".popsection": : "i" ("/anthill/stuff/tacas-comp/work/current--X--drivers/net/can/usb/ems_usb.ko--X--bulklinux-3.0.1--X--68_1/linux-3.0.1/csd_deg_dscv/11/dscv_tempdir/dscv/ri/68_1/drivers/net/can/usb/ems_usb.c.common.c"), "i" (510), "i" (sizeof(struct bug_entry ))); [5717-5723] [2023-11-06 20:56:20,252 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_748eb029-63fb-4558-b049-b75a83990061/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2023-11-06 20:56:20,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:56:20,518 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:56:20,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:20 WrapperNode [2023-11-06 20:56:20,520 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:56:20,522 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:56:20,522 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:56:20,522 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:56:20,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:20" (1/1) ... [2023-11-06 20:56:20,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:20" (1/1) ... [2023-11-06 20:56:20,721 INFO L138 Inliner]: procedures = 133, calls = 778, calls flagged for inlining = 54, calls inlined = 44, statements flattened = 1512 [2023-11-06 20:56:20,722 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:56:20,723 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:56:20,723 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:56:20,723 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:56:20,735 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:20" (1/1) ... [2023-11-06 20:56:20,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:20" (1/1) ... [2023-11-06 20:56:20,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:20" (1/1) ... [2023-11-06 20:56:20,747 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:20" (1/1) ... [2023-11-06 20:56:20,808 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:20" (1/1) ... [2023-11-06 20:56:20,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:20" (1/1) ... [2023-11-06 20:56:20,831 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:20" (1/1) ... [2023-11-06 20:56:20,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:20" (1/1) ... [2023-11-06 20:56:20,863 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:56:20,864 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:56:20,864 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:56:20,864 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:56:20,865 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:20" (1/1) ... [2023-11-06 20:56:20,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:56:20,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_748eb029-63fb-4558-b049-b75a83990061/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:56:20,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_748eb029-63fb-4558-b049-b75a83990061/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:56:20,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_748eb029-63fb-4558-b049-b75a83990061/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:56:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-11-06 20:56:20,960 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-11-06 20:56:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_init [2023-11-06 20:56:20,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_init [2023-11-06 20:56:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-06 20:56:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-06 20:56:20,962 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-06 20:56:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-06 20:56:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-06 20:56:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 20:56:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-06 20:56:20,962 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-06 20:56:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2023-11-06 20:56:20,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2023-11-06 20:56:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-06 20:56:20,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-06 20:56:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-06 20:56:20,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-06 20:56:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_exit [2023-11-06 20:56:20,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_exit [2023-11-06 20:56:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2023-11-06 20:56:20,967 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2023-11-06 20:56:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-06 20:56:20,967 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-06 20:56:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2023-11-06 20:56:20,968 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2023-11-06 20:56:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 20:56:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-06 20:56:20,969 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-06 20:56:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2023-11-06 20:56:20,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2023-11-06 20:56:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-06 20:56:20,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-06 20:56:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-06 20:56:20,970 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-06 20:56:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2023-11-06 20:56:20,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2023-11-06 20:56:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 20:56:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2023-11-06 20:56:20,971 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2023-11-06 20:56:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:56:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-06 20:56:20,971 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-06 20:56:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:56:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 20:56:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2023-11-06 20:56:20,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2023-11-06 20:56:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-11-06 20:56:20,972 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-11-06 20:56:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2023-11-06 20:56:20,973 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2023-11-06 20:56:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 20:56:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-11-06 20:56:20,973 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-11-06 20:56:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-06 20:56:20,973 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-06 20:56:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2023-11-06 20:56:20,974 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2023-11-06 20:56:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2023-11-06 20:56:20,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2023-11-06 20:56:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:56:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 20:56:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-06 20:56:20,976 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-06 20:56:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-06 20:56:20,977 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-06 20:56:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-06 20:56:20,977 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-06 20:56:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2023-11-06 20:56:20,978 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2023-11-06 20:56:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-06 20:56:20,978 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-06 20:56:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2023-11-06 20:56:20,978 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2023-11-06 20:56:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-06 20:56:20,978 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-06 20:56:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-06 20:56:20,979 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-06 20:56:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2023-11-06 20:56:20,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2023-11-06 20:56:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2023-11-06 20:56:20,979 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2023-11-06 20:56:20,980 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-06 20:56:20,980 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-06 20:56:20,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 20:56:20,981 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2023-11-06 20:56:20,981 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2023-11-06 20:56:20,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-06 20:56:20,981 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-06 20:56:20,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-06 20:56:20,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:56:20,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:56:21,384 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:56:21,388 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:56:21,856 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2023-11-06 20:56:22,056 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-06 20:56:24,212 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2023-11-06 20:56:24,213 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2023-11-06 20:56:24,268 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:56:24,937 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:56:24,937 INFO L302 CfgBuilder]: Removed 13 assume(true) statements. [2023-11-06 20:56:24,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:56:24 BoogieIcfgContainer [2023-11-06 20:56:24,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:56:24,948 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:56:24,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:56:24,951 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:56:24,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:56:18" (1/3) ... [2023-11-06 20:56:24,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ee126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:56:24, skipping insertion in model container [2023-11-06 20:56:24,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:20" (2/3) ... [2023-11-06 20:56:24,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ee126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:56:24, skipping insertion in model container [2023-11-06 20:56:24,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:56:24" (3/3) ... [2023-11-06 20:56:24,958 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2023-11-06 20:56:24,983 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:56:24,984 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 20:56:25,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:56:25,098 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=LoopsAndPotentialCycles, 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;@2308ac88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:56:25,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 20:56:25,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 382 states, 231 states have (on average 1.3463203463203464) internal successors, (311), 243 states have internal predecessors, (311), 112 states have call successors, (112), 38 states have call predecessors, (112), 37 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2023-11-06 20:56:25,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 20:56:25,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:56:25,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:56:25,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:56:25,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:56:25,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1021538595, now seen corresponding path program 1 times [2023-11-06 20:56:25,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:56:25,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754992386] [2023-11-06 20:56:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:56:25,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:56:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:56:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:56:27,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:56:27,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754992386] [2023-11-06 20:56:27,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754992386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:56:27,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:56:27,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 20:56:27,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007909559] [2023-11-06 20:56:27,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:56:27,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:56:27,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:56:27,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:56:27,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:56:27,208 INFO L87 Difference]: Start difference. First operand has 382 states, 231 states have (on average 1.3463203463203464) internal successors, (311), 243 states have internal predecessors, (311), 112 states have call successors, (112), 38 states have call predecessors, (112), 37 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 20:56:28,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 20:56:33,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 20:56:35,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:56:35,259 INFO L93 Difference]: Finished difference Result 761 states and 1081 transitions. [2023-11-06 20:56:35,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:56:35,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-06 20:56:35,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:56:35,276 INFO L225 Difference]: With dead ends: 761 [2023-11-06 20:56:35,276 INFO L226 Difference]: Without dead ends: 385 [2023-11-06 20:56:35,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:56:35,287 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 209 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-06 20:56:35,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1521 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-11-06 20:56:35,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-11-06 20:56:35,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 380. [2023-11-06 20:56:35,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 232 states have (on average 1.2844827586206897) internal successors, (298), 240 states have internal predecessors, (298), 110 states have call successors, (110), 37 states have call predecessors, (110), 37 states have return successors, (107), 105 states have call predecessors, (107), 106 states have call successors, (107) [2023-11-06 20:56:35,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 515 transitions. [2023-11-06 20:56:35,375 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 515 transitions. Word has length 16 [2023-11-06 20:56:35,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:56:35,376 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 515 transitions. [2023-11-06 20:56:35,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 20:56:35,377 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 515 transitions. [2023-11-06 20:56:35,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 20:56:35,378 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:56:35,378 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:56:35,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 20:56:35,379 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:56:35,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:56:35,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1962712684, now seen corresponding path program 1 times [2023-11-06 20:56:35,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:56:35,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671143244] [2023-11-06 20:56:35,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:56:35,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:56:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:56:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 20:56:36,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:56:36,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671143244] [2023-11-06 20:56:36,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671143244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:56:36,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:56:36,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:56:36,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187193405] [2023-11-06 20:56:36,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:56:36,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:56:36,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:56:36,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:56:36,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:56:36,541 INFO L87 Difference]: Start difference. First operand 380 states and 515 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 20:56:41,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:56:41,083 INFO L93 Difference]: Finished difference Result 958 states and 1295 transitions. [2023-11-06 20:56:41,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:56:41,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-11-06 20:56:41,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:56:41,092 INFO L225 Difference]: With dead ends: 958 [2023-11-06 20:56:41,092 INFO L226 Difference]: Without dead ends: 594 [2023-11-06 20:56:41,096 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 [2023-11-06 20:56:41,097 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 291 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-06 20:56:41,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 883 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-06 20:56:41,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2023-11-06 20:56:41,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 590. [2023-11-06 20:56:41,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 361 states have (on average 1.293628808864266) internal successors, (467), 372 states have internal predecessors, (467), 165 states have call successors, (165), 64 states have call predecessors, (165), 63 states have return successors, (162), 156 states have call predecessors, (162), 161 states have call successors, (162) [2023-11-06 20:56:41,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 794 transitions. [2023-11-06 20:56:41,182 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 794 transitions. Word has length 20 [2023-11-06 20:56:41,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:56:41,182 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 794 transitions. [2023-11-06 20:56:41,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 20:56:41,183 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 794 transitions. [2023-11-06 20:56:41,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-06 20:56:41,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:56:41,184 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:56:41,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 20:56:41,185 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:56:41,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:56:41,195 INFO L85 PathProgramCache]: Analyzing trace with hash 714288395, now seen corresponding path program 1 times [2023-11-06 20:56:41,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:56:41,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289302438] [2023-11-06 20:56:41,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:56:41,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:56:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:56:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 20:56:42,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:56:42,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289302438] [2023-11-06 20:56:42,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289302438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:56:42,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:56:42,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:56:42,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960363265] [2023-11-06 20:56:42,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:56:42,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:56:42,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:56:42,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:56:42,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:56:42,339 INFO L87 Difference]: Start difference. First operand 590 states and 794 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 20:56:47,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 20:56:47,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:56:47,490 INFO L93 Difference]: Finished difference Result 869 states and 1166 transitions. [2023-11-06 20:56:47,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:56:47,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2023-11-06 20:56:47,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:56:47,505 INFO L225 Difference]: With dead ends: 869 [2023-11-06 20:56:47,507 INFO L226 Difference]: Without dead ends: 860 [2023-11-06 20:56:47,508 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 [2023-11-06 20:56:47,509 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 376 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:56:47,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 880 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-06 20:56:47,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2023-11-06 20:56:47,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 851. [2023-11-06 20:56:47,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 521 states have (on average 1.2859884836852207) internal successors, (670), 533 states have internal predecessors, (670), 239 states have call successors, (239), 93 states have call predecessors, (239), 90 states have return successors, (235), 226 states have call predecessors, (235), 235 states have call successors, (235) [2023-11-06 20:56:47,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1144 transitions. [2023-11-06 20:56:47,616 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1144 transitions. Word has length 21 [2023-11-06 20:56:47,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:56:47,617 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1144 transitions. [2023-11-06 20:56:47,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 20:56:47,619 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1144 transitions. [2023-11-06 20:56:47,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-06 20:56:47,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:56:47,625 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:56:47,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 20:56:47,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:56:47,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:56:47,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1423059930, now seen corresponding path program 1 times [2023-11-06 20:56:47,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:56:47,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316279955] [2023-11-06 20:56:47,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:56:47,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:56:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:56:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 20:56:48,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:56:48,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316279955] [2023-11-06 20:56:48,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316279955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:56:48,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:56:48,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:56:48,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923944186] [2023-11-06 20:56:48,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:56:48,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:56:48,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:56:48,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:56:48,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:56:48,587 INFO L87 Difference]: Start difference. First operand 851 states and 1144 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9)