./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ed28fe99994604a1173e3d4f71ab5b1542eccb5293571b04f5dd99c12a84c046 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:27:47,629 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:27:47,758 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:27:47,770 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:27:47,771 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:27:47,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:27:47,811 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:27:47,811 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:27:47,812 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:27:47,813 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:27:47,813 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:27:47,814 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:27:47,815 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:27:47,815 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:27:47,816 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:27:47,816 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:27:47,817 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:27:47,817 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:27:47,818 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:27:47,818 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:27:47,819 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:27:47,820 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:27:47,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:27:47,821 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:27:47,821 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:27:47,822 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:27:47,822 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:27:47,823 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:27:47,823 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:27:47,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:27:47,824 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:27:47,824 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:27:47,825 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:27:47,825 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:27:47,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:27:47,826 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:27:47,826 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:27:47,826 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:27:47,827 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:27:47,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:27:47,827 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:27:47,828 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:27:47,829 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:27:47,829 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:27:47,829 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_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed28fe99994604a1173e3d4f71ab5b1542eccb5293571b04f5dd99c12a84c046 [2023-11-23 21:27:48,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:27:48,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:27:48,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:27:48,240 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:27:48,241 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:27:48,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i [2023-11-23 21:27:51,433 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:27:52,186 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:27:52,187 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i [2023-11-23 21:27:52,237 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/data/a6f8bf11b/4c2853ca72184296ac78d45648639af7/FLAGefd3ffcad [2023-11-23 21:27:52,252 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/data/a6f8bf11b/4c2853ca72184296ac78d45648639af7 [2023-11-23 21:27:52,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:27:52,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:27:52,262 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:27:52,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:27:52,268 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:27:52,269 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:27:52" (1/1) ... [2023-11-23 21:27:52,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fe0d82a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:52, skipping insertion in model container [2023-11-23 21:27:52,270 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:27:52" (1/1) ... [2023-11-23 21:27:52,416 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:27:54,393 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_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i[275280,275293] [2023-11-23 21:27:54,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:27:54,519 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:27:54,785 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [6231] [2023-11-23 21:27:54,788 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [6238] [2023-11-23 21:27:54,790 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [6251] [2023-11-23 21:27:54,799 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; nop": : : "memory"); [6371] [2023-11-23 21:27:54,801 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [6424] [2023-11-23 21:27:54,801 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [6431] [2023-11-23 21:27:54,821 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (19), "i" (12UL)); [6570-6571] [2023-11-23 21:27:54,825 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (36), "i" (12UL)); [6599-6600] [2023-11-23 21:27:54,827 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (108), "i" (12UL)); [6629-6630] [2023-11-23 21:27:54,830 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (120), "i" (12UL)); [6659-6660] [2023-11-23 21:27:54,861 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6965] [2023-11-23 21:27:54,862 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6976] [2023-11-23 21:27:54,864 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6987] [2023-11-23 21:27:54,903 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7204] [2023-11-23 21:27:54,903 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7207] [2023-11-23 21:27:54,907 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7268] [2023-11-23 21:27:54,908 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7271] [2023-11-23 21:27:54,908 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7274] [2023-11-23 21:27:54,919 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7295] [2023-11-23 21:27:54,920 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7300] [2023-11-23 21:27:54,920 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7303] [2023-11-23 21:27:54,921 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7313] [2023-11-23 21:27:54,925 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7354] [2023-11-23 21:27:54,926 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7359] [2023-11-23 21:27:54,928 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7366] [2023-11-23 21:27:54,929 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7375] [2023-11-23 21:27:54,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7400] [2023-11-23 21:27:54,935 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7466] [2023-11-23 21:27:54,940 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7527] [2023-11-23 21:27:54,941 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7530] [2023-11-23 21:27:54,945 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7562] [2023-11-23 21:27:54,955 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7633] [2023-11-23 21:27:54,957 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7651] [2023-11-23 21:27:54,958 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7657] [2023-11-23 21:27:54,960 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7674] [2023-11-23 21:27:54,963 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7684] [2023-11-23 21:27:54,964 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7690] [2023-11-23 21:27:54,965 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7696] [2023-11-23 21:27:54,966 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7702] [2023-11-23 21:27:54,970 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7741] [2023-11-23 21:27:54,971 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7747] [2023-11-23 21:27:54,972 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7753] [2023-11-23 21:27:54,974 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7771] [2023-11-23 21:27:54,981 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7852] [2023-11-23 21:27:54,986 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7918] [2023-11-23 21:27:54,988 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7936] [2023-11-23 21:27:54,996 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8018] [2023-11-23 21:27:55,000 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8080] [2023-11-23 21:27:55,031 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8345] [2023-11-23 21:27:55,034 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8404] [2023-11-23 21:27:55,035 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8406] [2023-11-23 21:27:55,036 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8414] [2023-11-23 21:27:55,040 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8451] [2023-11-23 21:27:55,041 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8453] [2023-11-23 21:27:55,042 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8470] [2023-11-23 21:27:55,051 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)rq->ifr_ifru.ifru_data): "ebx"); [8605] [2023-11-23 21:27:55,052 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)rq->ifr_ifru.ifru_data): "ebx"); [8608] [2023-11-23 21:27:55,053 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)rq->ifr_ifru.ifru_data): "ebx"); [8611] [2023-11-23 21:27:55,055 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)rq->ifr_ifru.ifru_data): "ebx"); [8614] [2023-11-23 21:27:55,056 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)rq->ifr_ifru.ifru_data): "ebx"); [8617] [2023-11-23 21:27:55,081 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_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i[275280,275293] [2023-11-23 21:27:55,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:27:55,208 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:27:55,242 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:27:55,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55 WrapperNode [2023-11-23 21:27:55,242 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:27:55,243 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:27:55,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:27:55,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:27:55,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2023-11-23 21:27:55,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2023-11-23 21:27:55,529 INFO L138 Inliner]: procedures = 224, calls = 1334, calls flagged for inlining = 123, calls inlined = 120, statements flattened = 3960 [2023-11-23 21:27:55,530 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:27:55,531 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:27:55,531 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:27:55,531 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:27:55,541 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2023-11-23 21:27:55,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2023-11-23 21:27:55,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2023-11-23 21:27:55,589 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2023-11-23 21:27:55,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2023-11-23 21:27:55,717 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2023-11-23 21:27:55,757 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2023-11-23 21:27:55,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2023-11-23 21:27:55,823 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:27:55,825 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:27:55,825 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:27:55,825 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:27:55,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2023-11-23 21:27:55,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:27:55,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:27:55,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:27:55,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:27:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2023-11-23 21:27:55,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2023-11-23 21:27:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:27:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2023-11-23 21:27:55,905 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2023-11-23 21:27:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:27:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-11-23 21:27:55,906 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-11-23 21:27:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:27:55,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:27:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:27:55,907 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:27:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-23 21:27:55,908 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-23 21:27:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-23 21:27:55,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-23 21:27:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:27:55,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:27:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:27:55,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:27:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2023-11-23 21:27:55,909 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2023-11-23 21:27:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-23 21:27:55,909 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-23 21:27:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:27:55,910 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:27:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:27:55,910 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:27:55,911 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-23 21:27:55,911 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-23 21:27:55,911 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-11-23 21:27:55,911 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-11-23 21:27:55,911 INFO L130 BoogieDeclarations]: Found specification of procedure rr_init1 [2023-11-23 21:27:55,911 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_init1 [2023-11-23 21:27:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-23 21:27:55,912 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-23 21:27:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-11-23 21:27:55,912 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-11-23 21:27:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:27:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure rr_ioctl [2023-11-23 21:27:55,912 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_ioctl [2023-11-23 21:27:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:27:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:27:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-23 21:27:55,913 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-23 21:27:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-23 21:27:55,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-23 21:27:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:27:55,914 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:27:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2023-11-23 21:27:55,914 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2023-11-23 21:27:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:27:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:27:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:27:55,915 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:27:55,916 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-11-23 21:27:55,916 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-11-23 21:27:55,917 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2023-11-23 21:27:55,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2023-11-23 21:27:55,917 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 21:27:55,917 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 21:27:55,919 INFO L130 BoogieDeclarations]: Found specification of procedure set_rraddr [2023-11-23 21:27:55,919 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rraddr [2023-11-23 21:27:55,919 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-23 21:27:55,919 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-23 21:27:55,919 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 21:27:55,920 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 21:27:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure rr_read_eeprom_word [2023-11-23 21:27:55,920 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_read_eeprom_word [2023-11-23 21:27:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure hippi_mac_addr [2023-11-23 21:27:55,920 INFO L138 BoogieDeclarations]: Found implementation of procedure hippi_mac_addr [2023-11-23 21:27:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:27:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-23 21:27:55,921 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-23 21:27:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure rr_read_eeprom [2023-11-23 21:27:55,922 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_read_eeprom [2023-11-23 21:27:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:27:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:27:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-23 21:27:55,923 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-23 21:27:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-23 21:27:55,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-23 21:27:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:27:55,923 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:27:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-23 21:27:55,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-23 21:27:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure hippi_change_mtu [2023-11-23 21:27:55,928 INFO L138 BoogieDeclarations]: Found implementation of procedure hippi_change_mtu [2023-11-23 21:27:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:27:55,929 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:27:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-11-23 21:27:55,930 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-11-23 21:27:55,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:27:55,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:27:55,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:27:55,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:27:55,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:27:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:27:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 21:27:55,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 21:27:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:27:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 21:27:55,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 21:27:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:27:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2023-11-23 21:27:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2023-11-23 21:27:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2023-11-23 21:27:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2023-11-23 21:27:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure rr_raz_tx [2023-11-23 21:27:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_raz_tx [2023-11-23 21:27:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-11-23 21:27:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-11-23 21:27:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2023-11-23 21:27:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2023-11-23 21:27:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-23 21:27:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-23 21:27:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-23 21:27:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-23 21:27:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-23 21:27:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-23 21:27:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:27:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:27:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:27:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure rr_raz_rx [2023-11-23 21:27:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_raz_rx [2023-11-23 21:27:56,693 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:27:56,697 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:27:58,091 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:27:59,628 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:28:00,816 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:28:00,816 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:28:00,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:00 BoogieIcfgContainer [2023-11-23 21:28:00,820 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:28:00,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:28:00,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:28:00,827 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:28:00,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:27:52" (1/3) ... [2023-11-23 21:28:00,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfe152f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:28:00, skipping insertion in model container [2023-11-23 21:28:00,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (2/3) ... [2023-11-23 21:28:00,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfe152f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:28:00, skipping insertion in model container [2023-11-23 21:28:00,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:00" (3/3) ... [2023-11-23 21:28:00,832 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i [2023-11-23 21:28:00,855 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:28:00,856 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:28:00,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:28:00,974 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;@320ac3a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:28:00,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:28:00,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 1138 states, 652 states have (on average 1.3006134969325154) internal successors, (848), 667 states have internal predecessors, (848), 431 states have call successors, (431), 54 states have call predecessors, (431), 53 states have return successors, (425), 425 states have call predecessors, (425), 425 states have call successors, (425) [2023-11-23 21:28:01,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 21:28:01,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:01,026 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 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] [2023-11-23 21:28:01,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:01,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:01,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1851685104, now seen corresponding path program 1 times [2023-11-23 21:28:01,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:01,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820107912] [2023-11-23 21:28:01,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:01,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:01,905 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-23 21:28:01,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:28:01,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820107912] [2023-11-23 21:28:01,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820107912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:01,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:28:01,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:28:01,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623837413] [2023-11-23 21:28:01,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:01,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:28:01,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:28:01,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:28:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:28:01,956 INFO L87 Difference]: Start difference. First operand has 1138 states, 652 states have (on average 1.3006134969325154) internal successors, (848), 667 states have internal predecessors, (848), 431 states have call successors, (431), 54 states have call predecessors, (431), 53 states have return successors, (425), 425 states have call predecessors, (425), 425 states have call successors, (425) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 21:28:02,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:02,843 INFO L93 Difference]: Finished difference Result 3026 states and 4549 transitions. [2023-11-23 21:28:02,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:28:02,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2023-11-23 21:28:02,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:02,876 INFO L225 Difference]: With dead ends: 3026 [2023-11-23 21:28:02,876 INFO L226 Difference]: Without dead ends: 1880 [2023-11-23 21:28:02,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:28:02,893 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1169 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:02,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 3047 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:28:02,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2023-11-23 21:28:03,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1873. [2023-11-23 21:28:03,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1078 states have (on average 1.282931354359926) internal successors, (1383), 1094 states have internal predecessors, (1383), 700 states have call successors, (700), 95 states have call predecessors, (700), 94 states have return successors, (699), 696 states have call predecessors, (699), 699 states have call successors, (699) [2023-11-23 21:28:03,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2782 transitions. [2023-11-23 21:28:03,179 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2782 transitions. Word has length 93 [2023-11-23 21:28:03,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:03,180 INFO L495 AbstractCegarLoop]: Abstraction has 1873 states and 2782 transitions. [2023-11-23 21:28:03,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 21:28:03,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2782 transitions. [2023-11-23 21:28:03,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-23 21:28:03,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:03,187 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2023-11-23 21:28:03,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:28:03,188 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:03,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:03,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1691288359, now seen corresponding path program 1 times [2023-11-23 21:28:03,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:03,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729542430] [2023-11-23 21:28:03,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:03,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:03,676 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 21:28:03,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:28:03,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729542430] [2023-11-23 21:28:03,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729542430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:03,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:28:03,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:28:03,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840666620] [2023-11-23 21:28:03,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:03,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:28:03,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:28:03,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:28:03,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:28:03,680 INFO L87 Difference]: Start difference. First operand 1873 states and 2782 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:28:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:04,842 INFO L93 Difference]: Finished difference Result 5594 states and 8315 transitions. [2023-11-23 21:28:04,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:28:04,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 113 [2023-11-23 21:28:04,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:04,874 INFO L225 Difference]: With dead ends: 5594 [2023-11-23 21:28:04,874 INFO L226 Difference]: Without dead ends: 3738 [2023-11-23 21:28:04,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:28:04,887 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 1643 mSDsluCounter, 4573 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 6110 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:04,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 6110 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 21:28:04,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2023-11-23 21:28:05,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 3722. [2023-11-23 21:28:05,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3722 states, 2146 states have (on average 1.2833178005591799) internal successors, (2754), 2179 states have internal predecessors, (2754), 1387 states have call successors, (1387), 189 states have call predecessors, (1387), 188 states have return successors, (1386), 1379 states have call predecessors, (1386), 1386 states have call successors, (1386) [2023-11-23 21:28:05,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5527 transitions. [2023-11-23 21:28:05,341 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5527 transitions. Word has length 113 [2023-11-23 21:28:05,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:05,343 INFO L495 AbstractCegarLoop]: Abstraction has 3722 states and 5527 transitions. [2023-11-23 21:28:05,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:28:05,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5527 transitions. [2023-11-23 21:28:05,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-23 21:28:05,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:05,349 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:28:05,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:28:05,349 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:05,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:05,360 INFO L85 PathProgramCache]: Analyzing trace with hash 596671540, now seen corresponding path program 1 times [2023-11-23 21:28:05,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:05,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483816983] [2023-11-23 21:28:05,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:05,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:05,847 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 21:28:05,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:28:05,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483816983] [2023-11-23 21:28:05,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483816983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:05,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:28:05,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:28:05,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679025710] [2023-11-23 21:28:05,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:05,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:28:05,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:28:05,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:28:05,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:28:05,850 INFO L87 Difference]: Start difference. First operand 3722 states and 5527 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:28:07,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:07,050 INFO L93 Difference]: Finished difference Result 7453 states and 11066 transitions. [2023-11-23 21:28:07,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:28:07,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2023-11-23 21:28:07,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:07,086 INFO L225 Difference]: With dead ends: 7453 [2023-11-23 21:28:07,086 INFO L226 Difference]: Without dead ends: 3748 [2023-11-23 21:28:07,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:28:07,111 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 1641 mSDsluCounter, 4573 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 6110 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:07,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 6110 Invalid, 581 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:28:07,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2023-11-23 21:28:07,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 3732. [2023-11-23 21:28:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3732 states, 2154 states have (on average 1.2822655524605386) internal successors, (2762), 2187 states have internal predecessors, (2762), 1387 states have call successors, (1387), 191 states have call predecessors, (1387), 190 states have return successors, (1386), 1379 states have call predecessors, (1386), 1386 states have call successors, (1386) [2023-11-23 21:28:07,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 5535 transitions. [2023-11-23 21:28:07,551 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 5535 transitions. Word has length 114 [2023-11-23 21:28:07,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:07,552 INFO L495 AbstractCegarLoop]: Abstraction has 3732 states and 5535 transitions. [2023-11-23 21:28:07,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:28:07,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 5535 transitions. [2023-11-23 21:28:07,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 21:28:07,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:07,557 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2023-11-23 21:28:07,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:28:07,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:07,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:07,558 INFO L85 PathProgramCache]: Analyzing trace with hash -292424527, now seen corresponding path program 1 times [2023-11-23 21:28:07,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:07,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595563613] [2023-11-23 21:28:07,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:07,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 21:28:08,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:28:08,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595563613] [2023-11-23 21:28:08,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595563613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:08,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:28:08,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:28:08,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634103358] [2023-11-23 21:28:08,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:08,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:28:08,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:28:08,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:28:08,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:28:08,023 INFO L87 Difference]: Start difference. First operand 3732 states and 5535 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:28:09,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:09,335 INFO L93 Difference]: Finished difference Result 9338 states and 13841 transitions. [2023-11-23 21:28:09,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:28:09,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 112 [2023-11-23 21:28:09,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:09,381 INFO L225 Difference]: With dead ends: 9338 [2023-11-23 21:28:09,382 INFO L226 Difference]: Without dead ends: 5623 [2023-11-23 21:28:09,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:28:09,404 INFO L413 NwaCegarLoop]: 2370 mSDtfsCounter, 1645 mSDsluCounter, 6241 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 8611 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:09,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 8611 Invalid, 777 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 21:28:09,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5623 states. [2023-11-23 21:28:09,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5623 to 5569. [2023-11-23 21:28:09,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5569 states, 3214 states have (on average 1.2834474175482264) internal successors, (4125), 3268 states have internal predecessors, (4125), 2070 states have call successors, (2070), 285 states have call predecessors, (2070), 284 states have return successors, (2069), 2054 states have call predecessors, (2069), 2069 states have call successors, (2069) [2023-11-23 21:28:10,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5569 states to 5569 states and 8264 transitions. [2023-11-23 21:28:10,042 INFO L78 Accepts]: Start accepts. Automaton has 5569 states and 8264 transitions. Word has length 112 [2023-11-23 21:28:10,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:10,043 INFO L495 AbstractCegarLoop]: Abstraction has 5569 states and 8264 transitions. [2023-11-23 21:28:10,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:28:10,044 INFO L276 IsEmpty]: Start isEmpty. Operand 5569 states and 8264 transitions. [2023-11-23 21:28:10,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-23 21:28:10,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:10,047 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:28:10,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:28:10,048 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:10,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:10,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1436885622, now seen corresponding path program 1 times [2023-11-23 21:28:10,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:10,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746075035] [2023-11-23 21:28:10,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:10,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 21:28:10,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:28:10,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746075035] [2023-11-23 21:28:10,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746075035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:10,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:28:10,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:28:10,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445831992] [2023-11-23 21:28:10,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:10,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:28:10,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:28:10,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:28:10,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:28:10,428 INFO L87 Difference]: Start difference. First operand 5569 states and 8264 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:28:11,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:11,582 INFO L93 Difference]: Finished difference Result 9456 states and 13947 transitions. [2023-11-23 21:28:11,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:28:11,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2023-11-23 21:28:11,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:11,626 INFO L225 Difference]: With dead ends: 9456 [2023-11-23 21:28:11,627 INFO L226 Difference]: Without dead ends: 5111 [2023-11-23 21:28:11,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:28:11,652 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 1639 mSDsluCounter, 4573 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 6110 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:11,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1643 Valid, 6110 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:28:11,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5111 states. [2023-11-23 21:28:12,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5111 to 5083. [2023-11-23 21:28:12,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5083 states, 2904 states have (on average 1.2765151515151516) internal successors, (3707), 2948 states have internal predecessors, (3707), 1899 states have call successors, (1899), 280 states have call predecessors, (1899), 279 states have return successors, (1898), 1885 states have call predecessors, (1898), 1898 states have call successors, (1898) [2023-11-23 21:28:12,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5083 states to 5083 states and 7504 transitions. [2023-11-23 21:28:12,206 INFO L78 Accepts]: Start accepts. Automaton has 5083 states and 7504 transitions. Word has length 115 [2023-11-23 21:28:12,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:12,207 INFO L495 AbstractCegarLoop]: Abstraction has 5083 states and 7504 transitions. [2023-11-23 21:28:12,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:28:12,208 INFO L276 IsEmpty]: Start isEmpty. Operand 5083 states and 7504 transitions. [2023-11-23 21:28:12,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-23 21:28:12,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:12,214 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2023-11-23 21:28:12,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:28:12,215 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:12,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:12,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1119691126, now seen corresponding path program 1 times [2023-11-23 21:28:12,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:12,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206684013] [2023-11-23 21:28:12,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:12,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-23 21:28:12,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:28:12,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206684013] [2023-11-23 21:28:12,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206684013] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:28:12,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795743529] [2023-11-23 21:28:12,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:12,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:28:12,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:28:12,878 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:28:12,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:28:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:13,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:28:13,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:28:14,016 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 21:28:14,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:28:14,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795743529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:14,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:28:14,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-11-23 21:28:14,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281095046] [2023-11-23 21:28:14,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:14,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:28:14,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:28:14,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:28:14,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:28:14,020 INFO L87 Difference]: Start difference. First operand 5083 states and 7504 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 21:28:16,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:16,073 INFO L93 Difference]: Finished difference Result 12084 states and 17841 transitions. [2023-11-23 21:28:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:28:16,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 125 [2023-11-23 21:28:16,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:16,165 INFO L225 Difference]: With dead ends: 12084 [2023-11-23 21:28:16,165 INFO L226 Difference]: Without dead ends: 8359 [2023-11-23 21:28:16,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-11-23 21:28:16,193 INFO L413 NwaCegarLoop]: 1912 mSDtfsCounter, 1673 mSDsluCounter, 9158 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 11070 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:16,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 11070 Invalid, 1073 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 21:28:16,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8359 states. [2023-11-23 21:28:17,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8359 to 8297. [2023-11-23 21:28:17,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8297 states, 4734 states have (on average 1.2765103506548374) internal successors, (6043), 4814 states have internal predecessors, (6043), 3098 states have call successors, (3098), 461 states have call predecessors, (3098), 464 states have return successors, (3107), 3070 states have call predecessors, (3107), 3097 states have call successors, (3107) [2023-11-23 21:28:17,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8297 states to 8297 states and 12248 transitions. [2023-11-23 21:28:17,100 INFO L78 Accepts]: Start accepts. Automaton has 8297 states and 12248 transitions. Word has length 125 [2023-11-23 21:28:17,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:17,101 INFO L495 AbstractCegarLoop]: Abstraction has 8297 states and 12248 transitions. [2023-11-23 21:28:17,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 21:28:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 8297 states and 12248 transitions. [2023-11-23 21:28:17,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-23 21:28:17,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:17,106 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:28:17,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:28:17,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:28:17,317 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:17,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:17,317 INFO L85 PathProgramCache]: Analyzing trace with hash -111947943, now seen corresponding path program 1 times [2023-11-23 21:28:17,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:17,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259201678] [2023-11-23 21:28:17,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:17,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:17,896 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 21:28:17,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:28:17,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259201678] [2023-11-23 21:28:17,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259201678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:28:17,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205841994] [2023-11-23 21:28:17,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:17,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:28:17,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:28:17,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:28:17,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:28:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:18,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 1914 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:28:18,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:28:18,789 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 21:28:18,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:28:18,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205841994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:18,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:28:18,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-23 21:28:18,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256495003] [2023-11-23 21:28:18,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:18,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:28:18,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:28:18,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:28:18,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:28:18,793 INFO L87 Difference]: Start difference. First operand 8297 states and 12248 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 21:28:21,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:21,061 INFO L93 Difference]: Finished difference Result 18534 states and 27349 transitions. [2023-11-23 21:28:21,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:28:21,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 126 [2023-11-23 21:28:21,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:21,124 INFO L225 Difference]: With dead ends: 18534 [2023-11-23 21:28:21,125 INFO L226 Difference]: Without dead ends: 11595 [2023-11-23 21:28:21,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-11-23 21:28:21,158 INFO L413 NwaCegarLoop]: 2730 mSDtfsCounter, 1673 mSDsluCounter, 12418 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 15148 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:21,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 15148 Invalid, 1396 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 21:28:21,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11595 states. [2023-11-23 21:28:22,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11595 to 11521. [2023-11-23 21:28:22,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11521 states, 6570 states have (on average 1.2762557077625571) internal successors, (8385), 6692 states have internal predecessors, (8385), 4297 states have call successors, (4297), 642 states have call predecessors, (4297), 653 states have return successors, (4322), 4253 states have call predecessors, (4322), 4296 states have call successors, (4322) [2023-11-23 21:28:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11521 states to 11521 states and 17004 transitions. [2023-11-23 21:28:22,373 INFO L78 Accepts]: Start accepts. Automaton has 11521 states and 17004 transitions. Word has length 126 [2023-11-23 21:28:22,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:22,374 INFO L495 AbstractCegarLoop]: Abstraction has 11521 states and 17004 transitions. [2023-11-23 21:28:22,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 21:28:22,374 INFO L276 IsEmpty]: Start isEmpty. Operand 11521 states and 17004 transitions. [2023-11-23 21:28:22,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-23 21:28:22,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:22,379 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:28:22,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:28:22,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:28:22,589 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:22,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:22,589 INFO L85 PathProgramCache]: Analyzing trace with hash -223444239, now seen corresponding path program 1 times [2023-11-23 21:28:22,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:22,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922786106] [2023-11-23 21:28:22,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:22,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 21:28:23,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:28:23,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922786106] [2023-11-23 21:28:23,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922786106] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:28:23,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235496651] [2023-11-23 21:28:23,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:23,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:28:23,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:28:23,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:28:23,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:28:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:23,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:28:23,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:28:24,007 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 21:28:24,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:28:24,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235496651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:24,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:28:24,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-23 21:28:24,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27777886] [2023-11-23 21:28:24,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:24,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:28:24,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:28:24,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:28:24,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:28:24,013 INFO L87 Difference]: Start difference. First operand 11521 states and 17004 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 21:28:26,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:26,349 INFO L93 Difference]: Finished difference Result 24978 states and 36853 transitions. [2023-11-23 21:28:26,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:28:26,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2023-11-23 21:28:26,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:26,447 INFO L225 Difference]: With dead ends: 24978 [2023-11-23 21:28:26,447 INFO L226 Difference]: Without dead ends: 14815 [2023-11-23 21:28:26,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-11-23 21:28:26,495 INFO L413 NwaCegarLoop]: 2801 mSDtfsCounter, 1673 mSDsluCounter, 12702 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 15503 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:26,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 15503 Invalid, 1411 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1409 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 21:28:26,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14815 states. [2023-11-23 21:28:27,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14815 to 11523. [2023-11-23 21:28:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11523 states, 6572 states have (on average 1.276171637248935) internal successors, (8387), 6692 states have internal predecessors, (8387), 4297 states have call successors, (4297), 642 states have call predecessors, (4297), 653 states have return successors, (4322), 4255 states have call predecessors, (4322), 4296 states have call successors, (4322) [2023-11-23 21:28:28,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11523 states to 11523 states and 17006 transitions. [2023-11-23 21:28:28,152 INFO L78 Accepts]: Start accepts. Automaton has 11523 states and 17006 transitions. Word has length 127 [2023-11-23 21:28:28,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:28,153 INFO L495 AbstractCegarLoop]: Abstraction has 11523 states and 17006 transitions. [2023-11-23 21:28:28,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 21:28:28,154 INFO L276 IsEmpty]: Start isEmpty. Operand 11523 states and 17006 transitions. [2023-11-23 21:28:28,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-23 21:28:28,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:28,160 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:28:28,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:28:28,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:28:28,389 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:28,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:28,390 INFO L85 PathProgramCache]: Analyzing trace with hash -671626016, now seen corresponding path program 1 times [2023-11-23 21:28:28,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:28,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198952140] [2023-11-23 21:28:28,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:28,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 21:28:28,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:28:28,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198952140] [2023-11-23 21:28:28,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198952140] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:28:28,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340820581] [2023-11-23 21:28:28,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:28,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:28:28,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:28:28,953 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:28:28,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0414aafe-cb3f-4a38-a6ce-9099b1d07e68/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:28:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:29,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:28:29,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:28:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 21:28:29,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:28:29,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340820581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:29,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:28:29,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-23 21:28:29,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457453618] [2023-11-23 21:28:29,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:29,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:28:29,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:28:29,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:28:29,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:28:29,837 INFO L87 Difference]: Start difference. First operand 11523 states and 17006 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15)