./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa7b7b2-0ac4-484b-9591-3db3fdd74c53/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa7b7b2-0ac4-484b-9591-3db3fdd74c53/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa7b7b2-0ac4-484b-9591-3db3fdd74c53/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa7b7b2-0ac4-484b-9591-3db3fdd74c53/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa7b7b2-0ac4-484b-9591-3db3fdd74c53/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa7b7b2-0ac4-484b-9591-3db3fdd74c53/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:13:04,804 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:13:04,915 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa7b7b2-0ac4-484b-9591-3db3fdd74c53/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 22:13:04,921 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:13:04,922 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:13:04,961 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:13:04,961 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:13:04,962 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:13:04,963 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:13:04,968 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:13:04,968 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:13:04,969 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:13:04,970 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:13:04,971 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:13:04,972 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:13:04,972 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:13:04,973 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:13:04,973 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:13:04,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:13:04,974 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:13:04,974 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:13:04,975 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:13:04,975 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:13:04,975 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:13:04,976 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:13:04,977 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:13:04,977 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:13:04,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:13:04,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:13:04,978 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:13:04,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:13:04,980 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:13:04,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:13:04,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:13:04,981 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:13:04,981 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:13:04,981 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:13:04,981 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:13:04,982 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:13:04,982 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_6fa7b7b2-0ac4-484b-9591-3db3fdd74c53/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa7b7b2-0ac4-484b-9591-3db3fdd74c53/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 [2023-11-21 22:13:05,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:13:05,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:13:05,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:13:05,282 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:13:05,283 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:13:05,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa7b7b2-0ac4-484b-9591-3db3fdd74c53/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2023-11-21 22:13:08,328 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:13:09,015 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:13:09,015 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa7b7b2-0ac4-484b-9591-3db3fdd74c53/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2023-11-21 22:13:09,064 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa7b7b2-0ac4-484b-9591-3db3fdd74c53/bin/uautomizer-verify-bycVGegfSx/data/b7f9fd1b7/8ac7413c1839428795b3ead50baa85e0/FLAG42fd8eaaa [2023-11-21 22:13:09,083 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa7b7b2-0ac4-484b-9591-3db3fdd74c53/bin/uautomizer-verify-bycVGegfSx/data/b7f9fd1b7/8ac7413c1839428795b3ead50baa85e0 [2023-11-21 22:13:09,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:13:09,089 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:13:09,092 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:13:09,093 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:13:09,100 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:13:09,101 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:13:09" (1/1) ... [2023-11-21 22:13:09,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4259f4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:09, skipping insertion in model container [2023-11-21 22:13:09,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:13:09" (1/1) ... [2023-11-21 22:13:09,315 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:13:11,420 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_6fa7b7b2-0ac4-484b-9591-3db3fdd74c53/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2023-11-21 22:13:11,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:13:11,587 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:13:11,745 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"); [5574] [2023-11-21 22:13:11,748 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)); [5581] [2023-11-21 22:13:11,759 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %1,%0": "=q" (ret): "m" (*((unsigned char volatile *)addr)): "memory"); [5752] [2023-11-21 22:13:11,759 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movw %1,%0": "=r" (ret): "m" (*((unsigned short volatile *)addr)): "memory"); [5760] [2023-11-21 22:13:11,760 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [5768] [2023-11-21 22:13:11,760 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %0,%1": : "q" (val), "m" (*((unsigned char volatile *)addr)): "memory"); [5775] [2023-11-21 22:13:11,761 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movw %0,%1": : "r" (val), "m" (*((unsigned short volatile *)addr)): "memory"); [5782] [2023-11-21 22:13:11,761 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [5789] [2023-11-21 22:13:11,773 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)); [5980-5981] [2023-11-21 22:13:11,778 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)); [6009-6010] [2023-11-21 22:13:11,780 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (108), "i" (12UL)); [6039-6040] [2023-11-21 22:13:11,782 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (120), "i" (12UL)); [6069-6070] [2023-11-21 22:13:12,003 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_6fa7b7b2-0ac4-484b-9591-3db3fdd74c53/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2023-11-21 22:13:12,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:13:12,318 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:13:12,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:12 WrapperNode [2023-11-21 22:13:12,319 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:13:12,320 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:13:12,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:13:12,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:13:12,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:12" (1/1) ... [2023-11-21 22:13:12,457 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:12" (1/1) ... [2023-11-21 22:13:12,694 INFO L138 Inliner]: procedures = 226, calls = 1496, calls flagged for inlining = 121, calls inlined = 118, statements flattened = 4314 [2023-11-21 22:13:12,695 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:13:12,695 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:13:12,696 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:13:12,696 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:13:12,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:12" (1/1) ... [2023-11-21 22:13:12,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:12" (1/1) ... [2023-11-21 22:13:12,753 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:12" (1/1) ... [2023-11-21 22:13:13,570 WARN L106 HeapSplitter]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure #Ultimate.C_memset is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2023-11-21 22:13:13,570 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:12" (1/1) ... [2023-11-21 22:13:13,571 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:12" (1/1) ... [2023-11-21 22:13:13,723 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:12" (1/1) ... [2023-11-21 22:13:13,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:12" (1/1) ... [2023-11-21 22:13:13,793 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:12" (1/1) ... [2023-11-21 22:13:13,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:12" (1/1) ... [2023-11-21 22:13:13,843 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:13:13,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:13:13,845 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:13:13,845 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:13:13,846 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:12" (1/1) ... [2023-11-21 22:13:13,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:13:13,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa7b7b2-0ac4-484b-9591-3db3fdd74c53/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:13,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa7b7b2-0ac4-484b-9591-3db3fdd74c53/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:13:13,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa7b7b2-0ac4-484b-9591-3db3fdd74c53/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:13:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_get_drvinfo [2023-11-21 22:13:13,919 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_get_drvinfo [2023-11-21 22:13:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure check_if_running [2023-11-21 22:13:13,919 INFO L138 BoogieDeclarations]: Found implementation of procedure check_if_running [2023-11-21 22:13:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-21 22:13:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 22:13:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-11-21 22:13:13,920 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-11-21 22:13:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-21 22:13:13,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-21 22:13:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-21 22:13:13,921 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-21 22:13:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2023-11-21 22:13:13,921 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2023-11-21 22:13:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-21 22:13:13,922 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-21 22:13:13,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-21 22:13:13,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-21 22:13:13,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-21 22:13:13,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-21 22:13:13,926 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2023-11-21 22:13:13,926 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2023-11-21 22:13:13,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-21 22:13:13,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-21 22:13:13,926 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2023-11-21 22:13:13,927 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2023-11-21 22:13:13,928 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-21 22:13:13,928 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-21 22:13:13,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-21 22:13:13,928 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-21 22:13:13,928 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:13:13,928 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:13:13,928 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-21 22:13:13,928 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-21 22:13:13,929 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-11-21 22:13:13,929 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-11-21 22:13:13,929 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-21 22:13:13,929 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-21 22:13:13,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:13:13,929 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-11-21 22:13:13,929 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-11-21 22:13:13,929 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2023-11-21 22:13:13,930 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2023-11-21 22:13:13,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:13:13,930 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-21 22:13:13,930 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-21 22:13:13,930 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-21 22:13:13,930 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-21 22:13:13,930 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-21 22:13:13,930 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-21 22:13:13,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-21 22:13:13,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-21 22:13:13,931 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2023-11-21 22:13:13,932 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2023-11-21 22:13:13,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:13:13,933 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-21 22:13:13,933 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-21 22:13:13,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 22:13:13,933 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-21 22:13:13,934 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-21 22:13:13,934 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-21 22:13:13,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-21 22:13:13,934 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2023-11-21 22:13:13,934 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2023-11-21 22:13:13,935 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-21 22:13:13,935 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-21 22:13:13,935 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-21 22:13:13,935 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-21 22:13:13,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-21 22:13:13,935 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-21 22:13:13,935 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-21 22:13:13,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 22:13:13,936 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2023-11-21 22:13:13,936 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2023-11-21 22:13:13,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:13:13,936 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2023-11-21 22:13:13,936 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2023-11-21 22:13:13,937 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-21 22:13:13,937 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-21 22:13:13,937 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-21 22:13:13,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-21 22:13:13,937 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_ioctl [2023-11-21 22:13:13,938 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_ioctl [2023-11-21 22:13:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-21 22:13:13,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-21 22:13:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-11-21 22:13:13,938 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-11-21 22:13:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:13:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-21 22:13:13,938 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-21 22:13:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-21 22:13:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-21 22:13:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-21 22:13:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-21 22:13:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:13:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-21 22:13:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-21 22:13:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:13:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-21 22:13:13,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-21 22:13:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 22:13:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2023-11-21 22:13:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2023-11-21 22:13:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_get_stats [2023-11-21 22:13:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_get_stats [2023-11-21 22:13:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2023-11-21 22:13:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2023-11-21 22:13:13,942 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-21 22:13:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-21 22:13:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_tx_timeout [2023-11-21 22:13:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_tx_timeout [2023-11-21 22:13:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-11-21 22:13:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-11-21 22:13:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-21 22:13:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-21 22:13:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2023-11-21 22:13:13,944 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2023-11-21 22:13:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-21 22:13:13,944 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-21 22:13:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-21 22:13:13,945 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-21 22:13:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:13:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2023-11-21 22:13:13,945 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2023-11-21 22:13:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2023-11-21 22:13:13,945 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2023-11-21 22:13:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2023-11-21 22:13:13,946 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2023-11-21 22:13:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2023-11-21 22:13:13,946 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2023-11-21 22:13:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:13:13,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:13:14,544 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:13:14,549 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:13:15,605 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-21 22:13:17,953 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:13:20,689 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:13:20,689 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:13:20,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:13:20 BoogieIcfgContainer [2023-11-21 22:13:20,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:13:20,697 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:13:20,697 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:13:20,700 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:13:20,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:13:09" (1/3) ... [2023-11-21 22:13:20,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c23f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:13:20, skipping insertion in model container [2023-11-21 22:13:20,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:12" (2/3) ... [2023-11-21 22:13:20,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c23f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:13:20, skipping insertion in model container [2023-11-21 22:13:20,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:13:20" (3/3) ... [2023-11-21 22:13:20,713 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2023-11-21 22:13:20,734 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:13:20,735 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:13:20,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:13:20,848 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=PETRI_NET, 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;@3f180a2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:13:20,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:13:20,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 970 states, 590 states have (on average 1.347457627118644) internal successors, (795), 618 states have internal predecessors, (795), 321 states have call successors, (321), 58 states have call predecessors, (321), 57 states have return successors, (313), 303 states have call predecessors, (313), 313 states have call successors, (313) [2023-11-21 22:13:20,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-21 22:13:20,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:13:20,909 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2023-11-21 22:13:20,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:13:20,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:20,918 INFO L85 PathProgramCache]: Analyzing trace with hash -402181544, now seen corresponding path program 1 times [2023-11-21 22:13:20,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:20,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698295288] [2023-11-21 22:13:20,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:20,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:21,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:21,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:21,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:13:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:21,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:13:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:21,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:21,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:13:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:21,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-21 22:13:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:13:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:13:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:13:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-21 22:13:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:13:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-21 22:13:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:13:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-21 22:13:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-21 22:13:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-21 22:13:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-21 22:13:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-11-21 22:13:22,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:22,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698295288] [2023-11-21 22:13:22,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698295288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:22,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:22,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:13:22,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446434597] [2023-11-21 22:13:22,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:22,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:13:22,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:22,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:13:22,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:13:22,392 INFO L87 Difference]: Start difference. First operand has 970 states, 590 states have (on average 1.347457627118644) internal successors, (795), 618 states have internal predecessors, (795), 321 states have call successors, (321), 58 states have call predecessors, (321), 57 states have return successors, (313), 303 states have call predecessors, (313), 313 states have call successors, (313) Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:13:26,792 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 [] [2023-11-21 22:13:28,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:13:30,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:13:32,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:13:34,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:13:40,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:13:42,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:13:44,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:13:46,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:13:48,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:13:49,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:13:49,117 INFO L93 Difference]: Finished difference Result 2731 states and 4050 transitions. [2023-11-21 22:13:49,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:13:49,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2023-11-21 22:13:49,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:13:49,150 INFO L225 Difference]: With dead ends: 2731 [2023-11-21 22:13:49,150 INFO L226 Difference]: Without dead ends: 1753 [2023-11-21 22:13:49,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:13:49,167 INFO L413 NwaCegarLoop]: 1052 mSDtfsCounter, 1644 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 2013 mSolverCounterSat, 1471 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 3494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1471 IncrementalHoareTripleChecker+Valid, 2013 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:13:49,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1761 Valid, 2734 Invalid, 3494 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1471 Valid, 2013 Invalid, 10 Unknown, 0 Unchecked, 26.2s Time] [2023-11-21 22:13:49,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2023-11-21 22:13:49,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1480. [2023-11-21 22:13:49,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 920 states have (on average 1.317391304347826) internal successors, (1212), 947 states have internal predecessors, (1212), 459 states have call successors, (459), 101 states have call predecessors, (459), 100 states have return successors, (458), 444 states have call predecessors, (458), 458 states have call successors, (458) [2023-11-21 22:13:49,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 2129 transitions. [2023-11-21 22:13:49,404 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 2129 transitions. Word has length 120 [2023-11-21 22:13:49,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:13:49,406 INFO L495 AbstractCegarLoop]: Abstraction has 1480 states and 2129 transitions. [2023-11-21 22:13:49,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:13:49,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 2129 transitions. [2023-11-21 22:13:49,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-21 22:13:49,418 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:13:49,419 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2023-11-21 22:13:49,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:13:49,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:13:49,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:49,420 INFO L85 PathProgramCache]: Analyzing trace with hash -800313824, now seen corresponding path program 1 times [2023-11-21 22:13:49,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:49,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688835413] [2023-11-21 22:13:49,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:49,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:13:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:13:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:13:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-21 22:13:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:13:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:13:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:13:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-21 22:13:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:13:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-21 22:13:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:13:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-21 22:13:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-21 22:13:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-21 22:13:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-21 22:13:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-21 22:13:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-21 22:13:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,626 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-11-21 22:13:50,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:50,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688835413] [2023-11-21 22:13:50,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688835413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:50,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:50,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:13:50,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23449837] [2023-11-21 22:13:50,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:50,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:13:50,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:50,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:13:50,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:13:50,632 INFO L87 Difference]: Start difference. First operand 1480 states and 2129 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-21 22:13:55,956 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 [] [2023-11-21 22:13:57,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:13:59,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []