./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh --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 3a2c6724f5301da85e20fbddd1914030623487cb494f00194a53042f01a1dafb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:06:20,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:06:20,851 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 14:06:20,858 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:06:20,859 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:06:20,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:06:20,890 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:06:20,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:06:20,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:06:20,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:06:20,892 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:06:20,893 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:06:20,894 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:06:20,894 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:06:20,895 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:06:20,895 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:06:20,896 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:06:20,897 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:06:20,897 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:06:20,898 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:06:20,899 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:06:20,899 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:06:20,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:06:20,901 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:06:20,901 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:06:20,902 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:06:20,902 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:06:20,903 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:06:20,903 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:06:20,904 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:06:20,904 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:06:20,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:06:20,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:06:20,905 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:06:20,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:06:20,906 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:06:20,906 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:06:20,906 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:06:20,907 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:06:20,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:06:20,907 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:06:20,908 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:06:20,908 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:06:20,908 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:06:20,908 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_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a2c6724f5301da85e20fbddd1914030623487cb494f00194a53042f01a1dafb [2023-12-02 14:06:21,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:06:21,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:06:21,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:06:21,214 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:06:21,215 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:06:21,216 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2023-12-02 14:06:24,436 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:06:24,963 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:06:24,963 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2023-12-02 14:06:24,999 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/data/f6c89569a/ac47688173974cae8f5b56155d501c74/FLAG9a6b98bf1 [2023-12-02 14:06:25,016 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/data/f6c89569a/ac47688173974cae8f5b56155d501c74 [2023-12-02 14:06:25,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:06:25,021 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:06:25,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:06:25,023 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:06:25,029 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:06:25,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:06:25" (1/1) ... [2023-12-02 14:06:25,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e3cf86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:25, skipping insertion in model container [2023-12-02 14:06:25,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:06:25" (1/1) ... [2023-12-02 14:06:25,255 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:06:28,064 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_f43bdec8-1437-47db-9370-9bf2bfe18f0c/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i[325844,325857] [2023-12-02 14:06:28,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:06:28,163 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:06:28,253 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"); [5541] [2023-12-02 14:06:28,255 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)); [5548] [2023-12-02 14:06:28,255 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5555] [2023-12-02 14:06:28,257 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 *)"/home/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/7cdfae59d3ac602223400f61d8829e28/klever-core-work-dir/076166e/linux-drivers-clk1/lkbce/arch/x86/include/asm/paravirt.h"), "i" (804), "i" (12UL)); [5604-5605] [2023-12-02 14:06:28,257 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (44UL), [paravirt_opptr] "i" (& pv_irq_ops.save_fl.func), [paravirt_clobber] "i" (1): "memory", "cc"); [5610-5612] [2023-12-02 14:06:28,258 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 *)"/home/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/7cdfae59d3ac602223400f61d8829e28/klever-core-work-dir/076166e/linux-drivers-clk1/lkbce/arch/x86/include/asm/paravirt.h"), "i" (809), "i" (12UL)); [5637-5638] [2023-12-02 14:06:28,258 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (45UL), [paravirt_opptr] "i" (& pv_irq_ops.restore_fl.func), [paravirt_clobber] "i" (1), "D" (f): "memory", "cc"); [5643-5645] [2023-12-02 14:06:28,259 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 *)"/home/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/7cdfae59d3ac602223400f61d8829e28/klever-core-work-dir/076166e/linux-drivers-clk1/lkbce/arch/x86/include/asm/paravirt.h"), "i" (814), "i" (12UL)); [5669-5670] [2023-12-02 14:06:28,259 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (46UL), [paravirt_opptr] "i" (& pv_irq_ops.irq_disable.func), [paravirt_clobber] "i" (1): "memory", "cc"); [5675-5677] [2023-12-02 14:06:28,260 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; nop": : : "memory"); [5703] [2023-12-02 14:06:28,264 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr))); [5849] [2023-12-02 14:06:28,265 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr))); [5856] [2023-12-02 14:06:28,270 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)); [5968-5969] [2023-12-02 14:06:28,272 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)); [6002-6003] [2023-12-02 14:06:28,279 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/linux/skbuff.h"), "i" (1516), "i" (12UL)); [6177-6178] [2023-12-02 14:06:28,283 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/linux/netdevice.h"), "i" (502), "i" (12UL)); [6357-6358] [2023-12-02 14:06:28,284 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6364] [2023-12-02 14:06:28,331 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7641] [2023-12-02 14:06:28,334 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [7681] [2023-12-02 14:06:28,337 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [7734] [2023-12-02 14:06:28,340 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7786] [2023-12-02 14:06:28,341 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7810] [2023-12-02 14:06:28,342 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [7831] [2023-12-02 14:06:28,346 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7919] [2023-12-02 14:06:28,347 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 *)"drivers/net/ethernet/cadence/macb.c"), "i" (808), "i" (12UL)); [7938-7939] [2023-12-02 14:06:28,348 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7963] [2023-12-02 14:06:28,349 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [7993] [2023-12-02 14:06:28,350 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 *)"drivers/net/ethernet/cadence/macb.c"), "i" (863), "i" (12UL)); [8017-8018] [2023-12-02 14:06:28,364 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8300] [2023-12-02 14:06:28,517 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_f43bdec8-1437-47db-9370-9bf2bfe18f0c/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i[325844,325857] [2023-12-02 14:06:28,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:06:28,742 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:06:28,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:28 WrapperNode [2023-12-02 14:06:28,743 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:06:28,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:06:28,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:06:28,745 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:06:28,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:28" (1/1) ... [2023-12-02 14:06:28,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:28" (1/1) ... [2023-12-02 14:06:29,097 INFO L138 Inliner]: procedures = 414, calls = 2226, calls flagged for inlining = 248, calls inlined = 233, statements flattened = 6272 [2023-12-02 14:06:29,098 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:06:29,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:06:29,099 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:06:29,099 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:06:29,111 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:28" (1/1) ... [2023-12-02 14:06:29,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:28" (1/1) ... [2023-12-02 14:06:29,141 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:28" (1/1) ... [2023-12-02 14:06:29,141 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:28" (1/1) ... [2023-12-02 14:06:29,297 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:28" (1/1) ... [2023-12-02 14:06:29,333 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:28" (1/1) ... [2023-12-02 14:06:29,365 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:28" (1/1) ... [2023-12-02 14:06:29,391 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:28" (1/1) ... [2023-12-02 14:06:29,433 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:06:29,434 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:06:29,434 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:06:29,434 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:06:29,435 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:28" (1/1) ... [2023-12-02 14:06:29,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:06:29,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:06:29,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:06:29,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:06:29,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 14:06:29,516 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 14:06:29,516 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2023-12-02 14:06:29,517 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2023-12-02 14:06:29,517 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-12-02 14:06:29,517 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-12-02 14:06:29,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 14:06:29,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 14:06:29,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_open_9_6 [2023-12-02 14:06:29,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_open_9_6 [2023-12-02 14:06:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2023-12-02 14:06:29,518 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2023-12-02 14:06:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-12-02 14:06:29,518 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-12-02 14:06:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-12-02 14:06:29,518 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-12-02 14:06:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure macb_set_hwaddr [2023-12-02 14:06:29,518 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_set_hwaddr [2023-12-02 14:06:29,519 INFO L130 BoogieDeclarations]: Found specification of procedure macb_get_regs_len [2023-12-02 14:06:29,519 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_get_regs_len [2023-12-02 14:06:29,519 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-12-02 14:06:29,519 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-12-02 14:06:29,519 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 14:06:29,519 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 14:06:29,519 INFO L130 BoogieDeclarations]: Found specification of procedure macb_probe [2023-12-02 14:06:29,519 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_probe [2023-12-02 14:06:29,520 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2023-12-02 14:06:29,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2023-12-02 14:06:29,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-12-02 14:06:29,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-12-02 14:06:29,520 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-12-02 14:06:29,520 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-12-02 14:06:29,521 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-12-02 14:06:29,521 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-12-02 14:06:29,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 14:06:29,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 14:06:29,521 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2023-12-02 14:06:29,522 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2023-12-02 14:06:29,522 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 14:06:29,522 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 14:06:29,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:06:29,522 INFO L130 BoogieDeclarations]: Found specification of procedure macb_remove [2023-12-02 14:06:29,523 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_remove [2023-12-02 14:06:29,523 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 14:06:29,523 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 14:06:29,523 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2023-12-02 14:06:29,523 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2023-12-02 14:06:29,523 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-12-02 14:06:29,523 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-12-02 14:06:29,524 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-12-02 14:06:29,524 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-12-02 14:06:29,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 14:06:29,524 INFO L130 BoogieDeclarations]: Found specification of procedure __napi_schedule [2023-12-02 14:06:29,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __napi_schedule [2023-12-02 14:06:29,525 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-12-02 14:06:29,525 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-12-02 14:06:29,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2023-12-02 14:06:29,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2023-12-02 14:06:29,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 14:06:29,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-12-02 14:06:29,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-12-02 14:06:29,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 14:06:29,526 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-12-02 14:06:29,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-12-02 14:06:29,526 INFO L130 BoogieDeclarations]: Found specification of procedure macb_free_consistent [2023-12-02 14:06:29,526 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_free_consistent [2023-12-02 14:06:29,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 14:06:29,527 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 14:06:29,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2023-12-02 14:06:29,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2023-12-02 14:06:29,527 INFO L130 BoogieDeclarations]: Found specification of procedure macb_open [2023-12-02 14:06:29,527 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_open [2023-12-02 14:06:29,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-12-02 14:06:29,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-12-02 14:06:29,527 INFO L130 BoogieDeclarations]: Found specification of procedure macb_alloc_consistent [2023-12-02 14:06:29,528 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_alloc_consistent [2023-12-02 14:06:29,528 INFO L130 BoogieDeclarations]: Found specification of procedure macb_resume [2023-12-02 14:06:29,528 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_resume [2023-12-02 14:06:29,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 14:06:29,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev [2023-12-02 14:06:29,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev [2023-12-02 14:06:29,528 INFO L130 BoogieDeclarations]: Found specification of procedure macb_is_gem [2023-12-02 14:06:29,528 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_is_gem [2023-12-02 14:06:29,529 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2023-12-02 14:06:29,529 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2023-12-02 14:06:29,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:06:29,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 14:06:29,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 14:06:29,529 INFO L130 BoogieDeclarations]: Found specification of procedure macb_rx_ring_wrap [2023-12-02 14:06:29,530 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_rx_ring_wrap [2023-12-02 14:06:29,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 14:06:29,530 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 14:06:29,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 14:06:29,530 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-12-02 14:06:29,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-12-02 14:06:29,531 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2023-12-02 14:06:29,531 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2023-12-02 14:06:29,531 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-12-02 14:06:29,531 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-12-02 14:06:29,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-12-02 14:06:29,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-12-02 14:06:29,531 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-12-02 14:06:29,531 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-12-02 14:06:29,531 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule_prep [2023-12-02 14:06:29,532 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule_prep [2023-12-02 14:06:29,532 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2023-12-02 14:06:29,532 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2023-12-02 14:06:29,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:06:29,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:06:29,532 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-12-02 14:06:29,532 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-12-02 14:06:29,532 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2023-12-02 14:06:29,533 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2023-12-02 14:06:29,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 14:06:29,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 14:06:29,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 14:06:29,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 14:06:29,533 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2023-12-02 14:06:29,533 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2023-12-02 14:06:29,534 INFO L130 BoogieDeclarations]: Found specification of procedure phy_find_first [2023-12-02 14:06:29,534 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_find_first [2023-12-02 14:06:29,534 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-12-02 14:06:29,534 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-12-02 14:06:29,534 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_ring_wrap [2023-12-02 14:06:29,534 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_ring_wrap [2023-12-02 14:06:29,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_17 [2023-12-02 14:06:29,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_17 [2023-12-02 14:06:29,534 INFO L130 BoogieDeclarations]: Found specification of procedure macb_get_hwaddr [2023-12-02 14:06:29,535 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_get_hwaddr [2023-12-02 14:06:29,535 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-12-02 14:06:29,535 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-12-02 14:06:29,535 INFO L130 BoogieDeclarations]: Found specification of procedure macb_handle_link_change [2023-12-02 14:06:29,535 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_handle_link_change [2023-12-02 14:06:29,535 INFO L130 BoogieDeclarations]: Found specification of procedure macb_mii_init [2023-12-02 14:06:29,535 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_mii_init [2023-12-02 14:06:29,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_prepare_enable_14 [2023-12-02 14:06:29,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_prepare_enable_14 [2023-12-02 14:06:29,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_prepare_enable_16 [2023-12-02 14:06:29,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_prepare_enable_16 [2023-12-02 14:06:29,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_prepare_enable_15 [2023-12-02 14:06:29,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_prepare_enable_15 [2023-12-02 14:06:29,536 INFO L130 BoogieDeclarations]: Found specification of procedure macb_close [2023-12-02 14:06:29,536 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_close [2023-12-02 14:06:29,536 INFO L130 BoogieDeclarations]: Found specification of procedure macb_mdc_clk_div [2023-12-02 14:06:29,537 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_mdc_clk_div [2023-12-02 14:06:29,537 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2023-12-02 14:06:29,537 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2023-12-02 14:06:29,537 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-12-02 14:06:29,537 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-12-02 14:06:29,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_19 [2023-12-02 14:06:29,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_19 [2023-12-02 14:06:29,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:06:29,537 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_platdata [2023-12-02 14:06:29,538 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_platdata [2023-12-02 14:06:29,538 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2023-12-02 14:06:29,538 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2023-12-02 14:06:29,538 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-12-02 14:06:29,538 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-12-02 14:06:29,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_21 [2023-12-02 14:06:29,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_21 [2023-12-02 14:06:29,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 14:06:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_20 [2023-12-02 14:06:29,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_20 [2023-12-02 14:06:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure clk_get_rate [2023-12-02 14:06:29,539 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_get_rate [2023-12-02 14:06:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 14:06:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure macb_set_rx_mode [2023-12-02 14:06:29,539 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_set_rx_mode [2023-12-02 14:06:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-12-02 14:06:29,539 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-12-02 14:06:29,540 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_desc [2023-12-02 14:06:29,540 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_desc [2023-12-02 14:06:29,540 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2023-12-02 14:06:29,540 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2023-12-02 14:06:29,540 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-12-02 14:06:29,540 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-12-02 14:06:29,540 INFO L130 BoogieDeclarations]: Found specification of procedure macb_reset_hw [2023-12-02 14:06:29,540 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_reset_hw [2023-12-02 14:06:29,540 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-12-02 14:06:29,541 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-12-02 14:06:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure macb_suspend [2023-12-02 14:06:29,541 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_suspend [2023-12-02 14:06:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure devm_clk_get [2023-12-02 14:06:29,541 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_clk_get [2023-12-02 14:06:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-12-02 14:06:29,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-12-02 14:06:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure macb_dbw [2023-12-02 14:06:29,541 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_dbw [2023-12-02 14:06:29,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-12-02 14:06:29,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-12-02 14:06:29,542 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2023-12-02 14:06:29,542 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2023-12-02 14:06:29,542 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-12-02 14:06:29,542 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-12-02 14:06:29,542 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-12-02 14:06:29,542 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-12-02 14:06:29,542 INFO L130 BoogieDeclarations]: Found specification of procedure devm_pinctrl_put [2023-12-02 14:06:29,543 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_pinctrl_put [2023-12-02 14:06:29,543 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 14:06:29,543 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 14:06:29,543 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 14:06:29,543 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 14:06:29,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 14:06:29,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 14:06:29,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 14:06:29,543 INFO L130 BoogieDeclarations]: Found specification of procedure gem_rx_refill [2023-12-02 14:06:29,544 INFO L138 BoogieDeclarations]: Found implementation of procedure gem_rx_refill [2023-12-02 14:06:29,544 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-12-02 14:06:29,544 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-12-02 14:06:29,544 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_dma [2023-12-02 14:06:29,544 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_dma [2023-12-02 14:06:29,544 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_skb [2023-12-02 14:06:29,544 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_skb [2023-12-02 14:06:29,544 INFO L130 BoogieDeclarations]: Found specification of procedure macb_interrupt [2023-12-02 14:06:29,544 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_interrupt [2023-12-02 14:06:29,545 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-12-02 14:06:29,545 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-12-02 14:06:29,545 INFO L130 BoogieDeclarations]: Found specification of procedure __readl [2023-12-02 14:06:29,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __readl [2023-12-02 14:06:29,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-12-02 14:06:29,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-12-02 14:06:29,545 INFO L130 BoogieDeclarations]: Found specification of procedure __writel [2023-12-02 14:06:29,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __writel [2023-12-02 14:06:29,545 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2023-12-02 14:06:29,546 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2023-12-02 14:06:29,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:06:29,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-12-02 14:06:29,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-12-02 14:06:29,546 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2023-12-02 14:06:29,546 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2023-12-02 14:06:30,514 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:06:30,519 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:06:30,610 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 14:06:38,020 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:06:40,517 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:06:40,517 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 14:06:40,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:06:40 BoogieIcfgContainer [2023-12-02 14:06:40,520 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:06:40,523 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:06:40,524 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:06:40,528 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:06:40,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:06:25" (1/3) ... [2023-12-02 14:06:40,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6350a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:06:40, skipping insertion in model container [2023-12-02 14:06:40,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:28" (2/3) ... [2023-12-02 14:06:40,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6350a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:06:40, skipping insertion in model container [2023-12-02 14:06:40,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:06:40" (3/3) ... [2023-12-02 14:06:40,532 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2023-12-02 14:06:40,557 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:06:40,557 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 14:06:40,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:06:40,669 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;@3861cede, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:06:40,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 14:06:40,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 1536 states, 917 states have (on average 1.2595419847328244) internal successors, (1155), 941 states have internal predecessors, (1155), 511 states have call successors, (511), 107 states have call predecessors, (511), 106 states have return successors, (505), 500 states have call predecessors, (505), 505 states have call successors, (505) [2023-12-02 14:06:40,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 14:06:40,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:06:40,699 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-02 14:06:40,700 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:06:40,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:06:40,707 INFO L85 PathProgramCache]: Analyzing trace with hash -843342380, now seen corresponding path program 1 times [2023-12-02 14:06:40,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:06:40,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179203497] [2023-12-02 14:06:40,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:06:40,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:06:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:06:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 14:06:41,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:06:41,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179203497] [2023-12-02 14:06:41,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179203497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:06:41,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:06:41,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:06:41,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137315316] [2023-12-02 14:06:41,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:06:41,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:06:41,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:06:41,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:06:41,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:06:41,780 INFO L87 Difference]: Start difference. First operand has 1536 states, 917 states have (on average 1.2595419847328244) internal successors, (1155), 941 states have internal predecessors, (1155), 511 states have call successors, (511), 107 states have call predecessors, (511), 106 states have return successors, (505), 500 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 14:06:48,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:06:51,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:06:52,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:06:52,067 INFO L93 Difference]: Finished difference Result 1552 states and 2196 transitions. [2023-12-02 14:06:52,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:06:52,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2023-12-02 14:06:52,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:06:52,102 INFO L225 Difference]: With dead ends: 1552 [2023-12-02 14:06:52,103 INFO L226 Difference]: Without dead ends: 1528 [2023-12-02 14:06:52,111 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 [2023-12-02 14:06:52,116 INFO L413 NwaCegarLoop]: 1889 mSDtfsCounter, 2160 mSDsluCounter, 3772 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2164 SdHoareTripleChecker+Valid, 5661 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:06:52,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2164 Valid, 5661 Invalid, 844 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 842 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2023-12-02 14:06:52,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2023-12-02 14:06:52,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1528. [2023-12-02 14:06:52,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 916 states have (on average 1.2532751091703056) internal successors, (1148), 936 states have internal predecessors, (1148), 505 states have call successors, (505), 107 states have call predecessors, (505), 106 states have return successors, (502), 497 states have call predecessors, (502), 502 states have call successors, (502) [2023-12-02 14:06:52,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 2155 transitions. [2023-12-02 14:06:52,357 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 2155 transitions. Word has length 35 [2023-12-02 14:06:52,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:06:52,358 INFO L495 AbstractCegarLoop]: Abstraction has 1528 states and 2155 transitions. [2023-12-02 14:06:52,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 14:06:52,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 2155 transitions. [2023-12-02 14:06:52,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 14:06:52,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:06:52,362 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-02 14:06:52,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:06:52,363 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:06:52,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:06:52,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1077109976, now seen corresponding path program 1 times [2023-12-02 14:06:52,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:06:52,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211308649] [2023-12-02 14:06:52,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:06:52,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:06:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:06:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 14:06:52,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:06:52,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211308649] [2023-12-02 14:06:52,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211308649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:06:52,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:06:52,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:06:52,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862777130] [2023-12-02 14:06:52,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:06:52,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:06:52,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:06:52,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:06:52,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:06:52,949 INFO L87 Difference]: Start difference. First operand 1528 states and 2155 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 14:06:59,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:03,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:07,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:11,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:11,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:11,950 INFO L93 Difference]: Finished difference Result 2916 states and 4137 transitions. [2023-12-02 14:07:11,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:07:11,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 41 [2023-12-02 14:07:11,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:11,977 INFO L225 Difference]: With dead ends: 2916 [2023-12-02 14:07:11,977 INFO L226 Difference]: Without dead ends: 2914 [2023-12-02 14:07:11,985 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 [2023-12-02 14:07:11,986 INFO L413 NwaCegarLoop]: 2217 mSDtfsCounter, 2017 mSDsluCounter, 6225 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 8442 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:07:11,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 8442 Invalid, 1285 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1279 Invalid, 2 Unknown, 0 Unchecked, 18.6s Time] [2023-12-02 14:07:11,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2023-12-02 14:07:12,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 2890. [2023-12-02 14:07:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2890 states, 1731 states have (on average 1.2512998266897748) internal successors, (2166), 1772 states have internal predecessors, (2166), 951 states have call successors, (951), 209 states have call predecessors, (951), 207 states have return successors, (987), 932 states have call predecessors, (987), 945 states have call successors, (987) [2023-12-02 14:07:12,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2890 states to 2890 states and 4104 transitions. [2023-12-02 14:07:12,241 INFO L78 Accepts]: Start accepts. Automaton has 2890 states and 4104 transitions. Word has length 41 [2023-12-02 14:07:12,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:12,242 INFO L495 AbstractCegarLoop]: Abstraction has 2890 states and 4104 transitions. [2023-12-02 14:07:12,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 14:07:12,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2890 states and 4104 transitions. [2023-12-02 14:07:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 14:07:12,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:12,245 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-02 14:07:12,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 14:07:12,246 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:07:12,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:12,247 INFO L85 PathProgramCache]: Analyzing trace with hash 277034932, now seen corresponding path program 1 times [2023-12-02 14:07:12,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:12,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801926016] [2023-12-02 14:07:12,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:12,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 14:07:12,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:12,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801926016] [2023-12-02 14:07:12,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801926016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:07:12,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:07:12,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:07:12,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784475908] [2023-12-02 14:07:12,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:07:12,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:07:12,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:12,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:07:12,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:07:12,667 INFO L87 Difference]: Start difference. First operand 2890 states and 4104 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 14:07:18,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:20,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:22,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:26,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:28,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:30,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:32,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:32,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:32,676 INFO L93 Difference]: Finished difference Result 5436 states and 7787 transitions. [2023-12-02 14:07:32,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:07:32,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45 [2023-12-02 14:07:32,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:32,714 INFO L225 Difference]: With dead ends: 5436 [2023-12-02 14:07:32,714 INFO L226 Difference]: Without dead ends: 5432 [2023-12-02 14:07:32,728 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 [2023-12-02 14:07:32,729 INFO L413 NwaCegarLoop]: 2222 mSDtfsCounter, 2003 mSDsluCounter, 6241 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2004 SdHoareTripleChecker+Valid, 8463 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:07:32,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2004 Valid, 8463 Invalid, 1294 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1288 Invalid, 2 Unknown, 0 Unchecked, 19.6s Time] [2023-12-02 14:07:32,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5432 states. [2023-12-02 14:07:33,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5432 to 5398. [2023-12-02 14:07:33,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5398 states, 3235 states have (on average 1.2497681607418856) internal successors, (4043), 3314 states have internal predecessors, (4043), 1763 states have call successors, (1763), 407 states have call predecessors, (1763), 399 states have return successors, (1933), 1719 states have call predecessors, (1933), 1751 states have call successors, (1933) [2023-12-02 14:07:33,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5398 states to 5398 states and 7739 transitions. [2023-12-02 14:07:33,082 INFO L78 Accepts]: Start accepts. Automaton has 5398 states and 7739 transitions. Word has length 45 [2023-12-02 14:07:33,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:33,083 INFO L495 AbstractCegarLoop]: Abstraction has 5398 states and 7739 transitions. [2023-12-02 14:07:33,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 14:07:33,083 INFO L276 IsEmpty]: Start isEmpty. Operand 5398 states and 7739 transitions. [2023-12-02 14:07:33,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 14:07:33,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:33,086 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2023-12-02 14:07:33,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 14:07:33,087 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:07:33,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:33,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1619037176, now seen corresponding path program 1 times [2023-12-02 14:07:33,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:33,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761568801] [2023-12-02 14:07:33,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:33,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:33,445 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-02 14:07:33,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:33,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761568801] [2023-12-02 14:07:33,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761568801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:07:33,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:07:33,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:07:33,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501595569] [2023-12-02 14:07:33,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:07:33,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:07:33,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:33,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:07:33,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:07:33,448 INFO L87 Difference]: Start difference. First operand 5398 states and 7739 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 14:07:39,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:41,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:42,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:45,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:47,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:48,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:50,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:53,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:54,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:54,258 INFO L93 Difference]: Finished difference Result 10786 states and 15779 transitions. [2023-12-02 14:07:54,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:07:54,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 51 [2023-12-02 14:07:54,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:54,357 INFO L225 Difference]: With dead ends: 10786 [2023-12-02 14:07:54,357 INFO L226 Difference]: Without dead ends: 10727 [2023-12-02 14:07:54,367 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 [2023-12-02 14:07:54,368 INFO L413 NwaCegarLoop]: 1998 mSDtfsCounter, 2159 mSDsluCounter, 5848 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2159 SdHoareTripleChecker+Valid, 7846 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:07:54,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2159 Valid, 7846 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1180 Invalid, 3 Unknown, 0 Unchecked, 20.3s Time] [2023-12-02 14:07:54,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10727 states. [2023-12-02 14:07:55,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10727 to 10716. [2023-12-02 14:07:55,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10716 states, 6425 states have (on average 1.250272373540856) internal successors, (8033), 6583 states have internal predecessors, (8033), 3500 states have call successors, (3500), 805 states have call predecessors, (3500), 790 states have return successors, (4163), 3412 states have call predecessors, (4163), 3479 states have call successors, (4163) [2023-12-02 14:07:55,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10716 states to 10716 states and 15696 transitions. [2023-12-02 14:07:55,345 INFO L78 Accepts]: Start accepts. Automaton has 10716 states and 15696 transitions. Word has length 51 [2023-12-02 14:07:55,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:55,346 INFO L495 AbstractCegarLoop]: Abstraction has 10716 states and 15696 transitions. [2023-12-02 14:07:55,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 14:07:55,346 INFO L276 IsEmpty]: Start isEmpty. Operand 10716 states and 15696 transitions. [2023-12-02 14:07:55,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-02 14:07:55,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:55,391 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:07:55,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 14:07:55,391 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:07:55,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:55,392 INFO L85 PathProgramCache]: Analyzing trace with hash -381272492, now seen corresponding path program 1 times [2023-12-02 14:07:55,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:55,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447637014] [2023-12-02 14:07:55,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:55,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-12-02 14:07:59,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:59,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447637014] [2023-12-02 14:07:59,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447637014] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:07:59,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61779689] [2023-12-02 14:07:59,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:59,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:59,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:59,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:07:59,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 14:08:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:08:00,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 2762 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 14:08:00,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:08:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-12-02 14:08:01,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:08:01,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61779689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:08:01,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:08:01,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 17 [2023-12-02 14:08:01,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585961705] [2023-12-02 14:08:01,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:08:01,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 14:08:01,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:08:01,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 14:08:01,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2023-12-02 14:08:01,264 INFO L87 Difference]: Start difference. First operand 10716 states and 15696 transitions. Second operand has 12 states, 9 states have (on average 11.0) internal successors, (99), 10 states have internal predecessors, (99), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (41), 7 states have call predecessors, (41), 6 states have call successors, (41) [2023-12-02 14:08:12,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:16,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:17,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:25,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:28,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:08:28,949 INFO L93 Difference]: Finished difference Result 21624 states and 32495 transitions. [2023-12-02 14:08:28,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 14:08:28,950 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 11.0) internal successors, (99), 10 states have internal predecessors, (99), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (41), 7 states have call predecessors, (41), 6 states have call successors, (41) Word has length 229 [2023-12-02 14:08:28,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:08:29,047 INFO L225 Difference]: With dead ends: 21624 [2023-12-02 14:08:29,048 INFO L226 Difference]: Without dead ends: 10912 [2023-12-02 14:08:29,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2023-12-02 14:08:29,143 INFO L413 NwaCegarLoop]: 1872 mSDtfsCounter, 78 mSDsluCounter, 18552 mSDsCounter, 0 mSdLazyCounter, 3381 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 20424 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3381 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:08:29,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 20424 Invalid, 3393 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 3381 Invalid, 2 Unknown, 0 Unchecked, 26.8s Time] [2023-12-02 14:08:29,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10912 states. [2023-12-02 14:08:30,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10912 to 10818. [2023-12-02 14:08:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10818 states, 6492 states have (on average 1.2476894639556377) internal successors, (8100), 6650 states have internal predecessors, (8100), 3527 states have call successors, (3527), 805 states have call predecessors, (3527), 798 states have return successors, (4234), 3447 states have call predecessors, (4234), 3506 states have call successors, (4234) [2023-12-02 14:08:30,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10818 states to 10818 states and 15861 transitions. [2023-12-02 14:08:30,113 INFO L78 Accepts]: Start accepts. Automaton has 10818 states and 15861 transitions. Word has length 229 [2023-12-02 14:08:30,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:08:30,113 INFO L495 AbstractCegarLoop]: Abstraction has 10818 states and 15861 transitions. [2023-12-02 14:08:30,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 11.0) internal successors, (99), 10 states have internal predecessors, (99), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (41), 7 states have call predecessors, (41), 6 states have call successors, (41) [2023-12-02 14:08:30,114 INFO L276 IsEmpty]: Start isEmpty. Operand 10818 states and 15861 transitions. [2023-12-02 14:08:30,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-02 14:08:30,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:08:30,125 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:08:30,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:08:30,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:08:30,326 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:08:30,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:08:30,327 INFO L85 PathProgramCache]: Analyzing trace with hash -583818770, now seen corresponding path program 1 times [2023-12-02 14:08:30,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:08:30,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125356117] [2023-12-02 14:08:30,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:30,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:08:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:08:31,827 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2023-12-02 14:08:31,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:08:31,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125356117] [2023-12-02 14:08:31,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125356117] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:08:31,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699915081] [2023-12-02 14:08:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:31,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:08:31,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:08:31,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:08:31,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f43bdec8-1437-47db-9370-9bf2bfe18f0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 14:08:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:08:33,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 3047 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-02 14:08:33,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:08:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 50 proven. 56 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-12-02 14:08:34,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:08:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-12-02 14:08:35,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699915081] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:08:35,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1401447139] [2023-12-02 14:08:35,781 INFO L159 IcfgInterpreter]: Started Sifa with 141 locations of interest [2023-12-02 14:08:35,781 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:08:35,785 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:08:35,790 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:08:35,791 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:11:48,407 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_xmalloc with input of size 1867 for LOIs [2023-12-02 14:15:10,707 WARN L293 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 3390 DAG size of output: 3389 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 14:15:24,672 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_assume with input of size 134 for LOIs [2023-12-02 14:15:24,753 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_is_err with input of size 1884 for LOIs [2023-12-02 14:15:28,462 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_undef_int with input of size 1829 for LOIs [2023-12-02 14:15:34,827 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:16:38,213 WARN L293 SmtUtils]: Spent 1.05m on a formula simplification. DAG size of input: 1898 DAG size of output: 1895 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:17:35,538 WARN L293 SmtUtils]: Spent 56.49s on a formula simplification that was a NOOP. DAG size: 1829 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:18:36,710 WARN L293 SmtUtils]: Spent 1.01m on a formula simplification that was a NOOP. DAG size: 1837 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:19:39,771 WARN L293 SmtUtils]: Spent 1.04m on a formula simplification. DAG size of input: 1911 DAG size of output: 1899 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)