./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 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa5ea4-94e3-4b35-813c-0ffe75d48c03/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa5ea4-94e3-4b35-813c-0ffe75d48c03/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa5ea4-94e3-4b35-813c-0ffe75d48c03/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa5ea4-94e3-4b35-813c-0ffe75d48c03/bin/utaipan-verify-t7M7D8N6sZ/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_a2fa5ea4-94e3-4b35-813c-0ffe75d48c03/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa5ea4-94e3-4b35-813c-0ffe75d48c03/bin/utaipan-verify-t7M7D8N6sZ --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 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:51:53,458 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:51:53,580 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa5ea4-94e3-4b35-813c-0ffe75d48c03/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 04:51:53,586 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:51:53,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:51:53,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:51:53,630 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:51:53,631 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:51:53,632 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:51:53,637 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:51:53,638 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:51:53,638 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:51:53,639 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:51:53,641 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:51:53,655 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:51:53,655 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:51:53,656 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:51:53,657 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:51:53,657 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:51:53,658 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:51:53,658 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:51:53,659 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:51:53,660 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:51:53,661 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:51:53,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:51:53,662 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:51:53,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:51:53,663 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:51:53,663 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:51:53,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:51:53,665 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:51:53,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:51:53,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:51:53,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:53,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:51:53,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:51:53,668 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:51:53,668 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:51:53,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:51:53,669 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:51:53,669 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:51:53,670 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:51:53,671 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_a2fa5ea4-94e3-4b35-813c-0ffe75d48c03/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa5ea4-94e3-4b35-813c-0ffe75d48c03/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2023-11-19 04:51:53,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:51:54,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:51:54,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:51:54,012 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:51:54,013 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:51:54,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa5ea4-94e3-4b35-813c-0ffe75d48c03/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2023-11-19 04:51:57,322 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:51:57,889 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:51:57,890 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa5ea4-94e3-4b35-813c-0ffe75d48c03/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2023-11-19 04:51:57,940 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa5ea4-94e3-4b35-813c-0ffe75d48c03/bin/utaipan-verify-t7M7D8N6sZ/data/60c53538e/898c4551ba484e80b6ab85dd7bb484b1/FLAGef65514a3 [2023-11-19 04:51:57,958 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa5ea4-94e3-4b35-813c-0ffe75d48c03/bin/utaipan-verify-t7M7D8N6sZ/data/60c53538e/898c4551ba484e80b6ab85dd7bb484b1 [2023-11-19 04:51:57,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:51:57,967 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:51:57,970 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:57,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:51:57,976 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:51:57,977 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:57" (1/1) ... [2023-11-19 04:51:57,978 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aba2409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:57, skipping insertion in model container [2023-11-19 04:51:57,978 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:57" (1/1) ... [2023-11-19 04:51:58,106 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:51:59,350 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_a2fa5ea4-94e3-4b35-813c-0ffe75d48c03/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2023-11-19 04:51:59,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:59,466 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:51:59,630 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] [2023-11-19 04:51:59,633 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] [2023-11-19 04:51:59,634 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] [2023-11-19 04:51:59,638 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] [2023-11-19 04:51:59,639 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] [2023-11-19 04:51:59,729 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] [2023-11-19 04:51:59,899 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_a2fa5ea4-94e3-4b35-813c-0ffe75d48c03/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2023-11-19 04:51:59,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:52:00,160 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:52:00,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:00 WrapperNode [2023-11-19 04:52:00,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:52:00,163 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:52:00,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:52:00,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:52:00,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:00" (1/1) ... [2023-11-19 04:52:00,253 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:00" (1/1) ... [2023-11-19 04:52:00,341 INFO L138 Inliner]: procedures = 133, calls = 778, calls flagged for inlining = 54, calls inlined = 44, statements flattened = 1512 [2023-11-19 04:52:00,342 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:52:00,342 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:52:00,343 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:52:00,343 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:52:00,353 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:00" (1/1) ... [2023-11-19 04:52:00,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:00" (1/1) ... [2023-11-19 04:52:00,365 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:00" (1/1) ... [2023-11-19 04:52:00,366 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:00" (1/1) ... [2023-11-19 04:52:00,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:00" (1/1) ... [2023-11-19 04:52:00,434 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:00" (1/1) ... [2023-11-19 04:52:00,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:00" (1/1) ... [2023-11-19 04:52:00,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:00" (1/1) ... [2023-11-19 04:52:00,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:52:00,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:52:00,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:52:00,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:52:00,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:00" (1/1) ... [2023-11-19 04:52:00,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:52:00,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa5ea4-94e3-4b35-813c-0ffe75d48c03/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:52:00,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa5ea4-94e3-4b35-813c-0ffe75d48c03/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:52:00,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa5ea4-94e3-4b35-813c-0ffe75d48c03/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:52:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-11-19 04:52:00,601 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-11-19 04:52:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_init [2023-11-19 04:52:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_init [2023-11-19 04:52:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:52:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-19 04:52:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-19 04:52:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 04:52:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:52:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:52:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-19 04:52:00,603 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-19 04:52:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2023-11-19 04:52:00,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2023-11-19 04:52:00,604 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-19 04:52:00,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-19 04:52:00,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 04:52:00,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 04:52:00,604 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_exit [2023-11-19 04:52:00,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_exit [2023-11-19 04:52:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2023-11-19 04:52:00,605 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2023-11-19 04:52:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 04:52:00,605 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 04:52:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2023-11-19 04:52:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2023-11-19 04:52:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:52:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-19 04:52:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-19 04:52:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2023-11-19 04:52:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2023-11-19 04:52:00,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-19 04:52:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-19 04:52:00,607 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-19 04:52:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-19 04:52:00,607 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2023-11-19 04:52:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2023-11-19 04:52:00,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:52:00,608 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2023-11-19 04:52:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2023-11-19 04:52:00,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:52:00,608 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-19 04:52:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-19 04:52:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:52:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:52:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2023-11-19 04:52:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2023-11-19 04:52:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-11-19 04:52:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-11-19 04:52:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2023-11-19 04:52:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2023-11-19 04:52:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:52:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-11-19 04:52:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-11-19 04:52:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-19 04:52:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-19 04:52:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2023-11-19 04:52:00,611 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2023-11-19 04:52:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2023-11-19 04:52:00,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2023-11-19 04:52:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:52:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:52:00,612 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 04:52:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 04:52:00,612 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 04:52:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 04:52:00,612 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 04:52:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 04:52:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2023-11-19 04:52:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2023-11-19 04:52:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-19 04:52:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-19 04:52:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2023-11-19 04:52:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2023-11-19 04:52:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-19 04:52:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-19 04:52:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-19 04:52:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-19 04:52:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2023-11-19 04:52:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2023-11-19 04:52:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2023-11-19 04:52:00,615 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2023-11-19 04:52:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-19 04:52:00,615 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-19 04:52:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:52:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2023-11-19 04:52:00,615 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2023-11-19 04:52:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-19 04:52:00,616 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-19 04:52:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 04:52:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:52:00,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:52:01,068 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:52:01,073 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:52:01,626 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2023-11-19 04:52:01,844 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 04:52:04,989 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2023-11-19 04:52:04,990 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2023-11-19 04:52:05,051 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:52:05,665 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:52:05,666 INFO L302 CfgBuilder]: Removed 13 assume(true) statements. [2023-11-19 04:52:05,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:52:05 BoogieIcfgContainer [2023-11-19 04:52:05,674 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:52:05,677 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:52:05,677 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:52:05,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:52:05,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:51:57" (1/3) ... [2023-11-19 04:52:05,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ff9d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:52:05, skipping insertion in model container [2023-11-19 04:52:05,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:00" (2/3) ... [2023-11-19 04:52:05,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ff9d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:52:05, skipping insertion in model container [2023-11-19 04:52:05,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:52:05" (3/3) ... [2023-11-19 04:52:05,684 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2023-11-19 04:52:05,704 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:52:05,705 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:52:05,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:52:05,774 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;@7bc22ca7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:52:05,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:52:05,782 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) [2023-11-19 04:52:05,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 04:52:05,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:05,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:52:05,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:52:05,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:05,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1021538595, now seen corresponding path program 1 times [2023-11-19 04:52:05,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:52:05,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026593740] [2023-11-19 04:52:05,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:05,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:52:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:52:07,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:52:07,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026593740] [2023-11-19 04:52:07,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026593740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:07,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:07,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:52:07,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150882319] [2023-11-19 04:52:07,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:07,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:52:07,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:52:07,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:52:07,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:52:07,795 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) [2023-11-19 04:52:12,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:12,607 INFO L93 Difference]: Finished difference Result 761 states and 1081 transitions. [2023-11-19 04:52:12,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:52:12,609 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 [2023-11-19 04:52:12,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:12,628 INFO L225 Difference]: With dead ends: 761 [2023-11-19 04:52:12,628 INFO L226 Difference]: Without dead ends: 385 [2023-11-19 04:52:12,636 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 [2023-11-19 04:52:12,646 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 209 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s 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, 4.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:12,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1521 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-19 04:52:12,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-11-19 04:52:12,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 380. [2023-11-19 04:52:12,736 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) [2023-11-19 04:52:12,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 515 transitions. [2023-11-19 04:52:12,743 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 515 transitions. Word has length 16 [2023-11-19 04:52:12,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:12,745 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 515 transitions. [2023-11-19 04:52:12,745 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) [2023-11-19 04:52:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 515 transitions. [2023-11-19 04:52:12,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 04:52:12,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:12,747 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:52:12,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:52:12,748 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:52:12,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:12,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1962712684, now seen corresponding path program 1 times [2023-11-19 04:52:12,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:52:12,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895316801] [2023-11-19 04:52:12,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:12,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:52:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:13,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:52:13,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:52:13,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895316801] [2023-11-19 04:52:13,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895316801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:13,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:13,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:52:13,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941315146] [2023-11-19 04:52:13,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:13,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:52:13,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:52:13,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:52:13,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:52:13,987 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) [2023-11-19 04:52:15,216 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 [] [2023-11-19 04:52:19,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:52:19,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:19,505 INFO L93 Difference]: Finished difference Result 958 states and 1295 transitions. [2023-11-19 04:52:19,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:52:19,507 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 [2023-11-19 04:52:19,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:19,514 INFO L225 Difference]: With dead ends: 958 [2023-11-19 04:52:19,515 INFO L226 Difference]: Without dead ends: 594 [2023-11-19 04:52:19,517 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 [2023-11-19 04:52:19,519 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 291 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:19,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 883 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2023-11-19 04:52:19,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2023-11-19 04:52:19,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 590. [2023-11-19 04:52:19,628 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) [2023-11-19 04:52:19,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 794 transitions. [2023-11-19 04:52:19,636 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 794 transitions. Word has length 20 [2023-11-19 04:52:19,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:19,637 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 794 transitions. [2023-11-19 04:52:19,637 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) [2023-11-19 04:52:19,637 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 794 transitions. [2023-11-19 04:52:19,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 04:52:19,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:19,639 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] [2023-11-19 04:52:19,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:52:19,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:52:19,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:19,640 INFO L85 PathProgramCache]: Analyzing trace with hash 714288395, now seen corresponding path program 1 times [2023-11-19 04:52:19,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:52:19,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060962775] [2023-11-19 04:52:19,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:19,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:52:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:52:20,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:52:20,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060962775] [2023-11-19 04:52:20,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060962775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:20,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:20,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:52:20,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882999869] [2023-11-19 04:52:20,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:20,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:52:20,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:52:20,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:52:20,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:52:20,945 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) [2023-11-19 04:52:24,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:52:27,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:52:27,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:27,110 INFO L93 Difference]: Finished difference Result 869 states and 1166 transitions. [2023-11-19 04:52:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:52:27,110 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 [2023-11-19 04:52:27,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:27,118 INFO L225 Difference]: With dead ends: 869 [2023-11-19 04:52:27,118 INFO L226 Difference]: Without dead ends: 860 [2023-11-19 04:52:27,119 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 [2023-11-19 04:52:27,121 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 376 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:27,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 880 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2023-11-19 04:52:27,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2023-11-19 04:52:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 851. [2023-11-19 04:52:27,180 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) [2023-11-19 04:52:27,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1144 transitions. [2023-11-19 04:52:27,189 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1144 transitions. Word has length 21 [2023-11-19 04:52:27,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:27,189 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1144 transitions. [2023-11-19 04:52:27,189 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) [2023-11-19 04:52:27,190 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1144 transitions. [2023-11-19 04:52:27,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 04:52:27,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:27,195 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] [2023-11-19 04:52:27,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:52:27,195 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:52:27,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:27,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1423059930, now seen corresponding path program 1 times [2023-11-19 04:52:27,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:52:27,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730611735] [2023-11-19 04:52:27,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:27,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:52:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:52:28,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:52:28,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730611735] [2023-11-19 04:52:28,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730611735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:28,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:28,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:52:28,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288871668] [2023-11-19 04:52:28,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:28,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:52:28,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:52:28,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:52:28,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:52:28,344 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) [2023-11-19 04:52:30,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:52:31,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:31,192 INFO L93 Difference]: Finished difference Result 2073 states and 2891 transitions. [2023-11-19 04:52:31,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:52:31,193 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 58 [2023-11-19 04:52:31,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:31,203 INFO L225 Difference]: With dead ends: 2073 [2023-11-19 04:52:31,203 INFO L226 Difference]: Without dead ends: 1233 [2023-11-19 04:52:31,207 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 [2023-11-19 04:52:31,208 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 187 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:31,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 915 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-19 04:52:31,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2023-11-19 04:52:31,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1224. [2023-11-19 04:52:31,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 766 states have (on average 1.318537859007833) internal successors, (1010), 786 states have internal predecessors, (1010), 367 states have call successors, (367), 93 states have call predecessors, (367), 90 states have return successors, (363), 348 states have call predecessors, (363), 363 states have call successors, (363) [2023-11-19 04:52:31,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1740 transitions. [2023-11-19 04:52:31,296 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1740 transitions. Word has length 58 [2023-11-19 04:52:31,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:31,296 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 1740 transitions. [2023-11-19 04:52:31,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-19 04:52:31,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1740 transitions. [2023-11-19 04:52:31,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-19 04:52:31,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:31,301 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] [2023-11-19 04:52:31,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:52:31,302 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:52:31,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:31,302 INFO L85 PathProgramCache]: Analyzing trace with hash -732497447, now seen corresponding path program 1 times [2023-11-19 04:52:31,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:52:31,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651670049] [2023-11-19 04:52:31,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:31,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:52:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:33,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:52:33,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:52:33,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651670049] [2023-11-19 04:52:33,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651670049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:33,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:33,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 04:52:33,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585809359] [2023-11-19 04:52:33,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:33,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:52:33,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:52:33,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:52:33,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:52:33,137 INFO L87 Difference]: Start difference. First operand 1224 states and 1740 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 04:52:40,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:52:41,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:41,873 INFO L93 Difference]: Finished difference Result 2472 states and 3526 transitions. [2023-11-19 04:52:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:52:41,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 57 [2023-11-19 04:52:41,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:41,886 INFO L225 Difference]: With dead ends: 2472 [2023-11-19 04:52:41,886 INFO L226 Difference]: Without dead ends: 1552 [2023-11-19 04:52:41,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:52:41,892 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 1107 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 666 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:41,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 1076 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [666 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-11-19 04:52:41,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2023-11-19 04:52:41,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1535. [2023-11-19 04:52:42,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 963 states have (on average 1.3177570093457944) internal successors, (1269), 986 states have internal predecessors, (1269), 455 states have call successors, (455), 120 states have call predecessors, (455), 116 states have return successors, (451), 432 states have call predecessors, (451), 451 states have call successors, (451) [2023-11-19 04:52:42,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2175 transitions. [2023-11-19 04:52:42,015 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2175 transitions. Word has length 57 [2023-11-19 04:52:42,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:42,017 INFO L495 AbstractCegarLoop]: Abstraction has 1535 states and 2175 transitions. [2023-11-19 04:52:42,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 04:52:42,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2175 transitions. [2023-11-19 04:52:42,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 04:52:42,023 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:42,024 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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] [2023-11-19 04:52:42,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:52:42,024 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:52:42,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:42,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1611322577, now seen corresponding path program 1 times [2023-11-19 04:52:42,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:52:42,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807502661] [2023-11-19 04:52:42,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:42,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:52:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:43,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 04:52:43,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:52:43,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807502661] [2023-11-19 04:52:43,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807502661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:43,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:43,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 04:52:43,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519631217] [2023-11-19 04:52:43,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:43,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:52:43,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:52:43,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:52:43,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:52:43,877 INFO L87 Difference]: Start difference. First operand 1535 states and 2175 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 5 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9)