./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--natsemi--ns83820.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--ns83820.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f79f3d9139777b1f3fad73d9402dfb981cfc6913b7a8d2e7fbb1388b638a27b1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:20:29,487 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:20:29,600 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:20:29,607 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:20:29,607 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:20:29,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:20:29,651 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:20:29,652 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:20:29,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:20:29,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:20:29,658 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:20:29,659 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:20:29,659 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:20:29,661 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:20:29,662 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:20:29,662 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:20:29,663 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:20:29,663 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:20:29,664 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:20:29,664 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:20:29,665 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:20:29,666 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:20:29,667 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:20:29,667 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:20:29,668 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:20:29,668 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:20:29,669 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:20:29,669 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:20:29,670 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:20:29,670 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:20:29,671 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:20:29,672 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:20:29,672 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:20:29,672 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:20:29,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:20:29,673 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:20:29,673 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:20:29,674 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:20:29,674 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:20:29,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:20:29,675 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:20:29,675 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:20:29,676 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:20:29,676 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:20:29,676 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_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f79f3d9139777b1f3fad73d9402dfb981cfc6913b7a8d2e7fbb1388b638a27b1 [2023-11-23 21:20:29,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:20:30,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:20:30,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:20:30,013 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:20:30,013 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:20:30,015 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--ns83820.ko-entry_point.cil.out.i [2023-11-23 21:20:33,135 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:20:33,747 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:20:33,747 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--ns83820.ko-entry_point.cil.out.i [2023-11-23 21:20:33,799 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire/data/afba76028/78de9a07214a415b899ab4f81d98906d/FLAGb24f7c80c [2023-11-23 21:20:33,817 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire/data/afba76028/78de9a07214a415b899ab4f81d98906d [2023-11-23 21:20:33,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:20:33,824 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:20:33,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:20:33,829 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:20:33,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:20:33,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:20:33" (1/1) ... [2023-11-23 21:20:33,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@80148be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:33, skipping insertion in model container [2023-11-23 21:20:33,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:20:33" (1/1) ... [2023-11-23 21:20:34,048 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:20:36,273 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_cb153a09-acb1-43c4-8d78-1bc8f57fd035/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--ns83820.ko-entry_point.cil.out.i[262495,262508] [2023-11-23 21:20:36,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:20:36,404 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:20:36,547 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"); [5575] [2023-11-23 21:20:36,549 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)); [5582] [2023-11-23 21:20:36,550 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 %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [5590-5591] [2023-11-23 21:20:36,551 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 %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [5599-5600] [2023-11-23 21:20:36,559 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; incl %0": "+m" (v->counter)); [5732] [2023-11-23 21:20:36,559 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; decl %0": "+m" (v->counter)); [5739] [2023-11-23 21:20:36,572 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [5838] [2023-11-23 21:20:36,572 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [5845] [2023-11-23 21:20:36,583 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)); [6002-6003] [2023-11-23 21:20:36,587 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)); [6031-6032] [2023-11-23 21:20:36,589 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" (84), "i" (12UL)); [6066-6067] [2023-11-23 21:20:36,591 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" (96), "i" (12UL)); [6090-6091] [2023-11-23 21:20:36,609 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6453] [2023-11-23 21:20:36,614 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/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10706/dscv_tempdir/dscv/ri/43_2a/drivers/net/ethernet/natsemi/ns83820.c"), "i" (538), "i" (12UL)); [6480-6481] [2023-11-23 21:20:36,655 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6844] [2023-11-23 21:20:36,670 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6972] [2023-11-23 21:20:36,700 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)dev->rx_info.next_rx_desc) [7405] [2023-11-23 21:20:36,830 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_cb153a09-acb1-43c4-8d78-1bc8f57fd035/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--ns83820.ko-entry_point.cil.out.i[262495,262508] [2023-11-23 21:20:36,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:20:37,014 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:20:37,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:37 WrapperNode [2023-11-23 21:20:37,015 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:20:37,017 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:20:37,017 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:20:37,017 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:20:37,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:37" (1/1) ... [2023-11-23 21:20:37,135 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:37" (1/1) ... [2023-11-23 21:20:37,343 INFO L138 Inliner]: procedures = 264, calls = 1420, calls flagged for inlining = 130, calls inlined = 125, statements flattened = 4232 [2023-11-23 21:20:37,343 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:20:37,344 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:20:37,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:20:37,345 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:20:37,357 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:37" (1/1) ... [2023-11-23 21:20:37,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:37" (1/1) ... [2023-11-23 21:20:37,409 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:37" (1/1) ... [2023-11-23 21:20:37,409 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:37" (1/1) ... [2023-11-23 21:20:37,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:37" (1/1) ... [2023-11-23 21:20:37,605 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:37" (1/1) ... [2023-11-23 21:20:37,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:37" (1/1) ... [2023-11-23 21:20:37,662 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:37" (1/1) ... [2023-11-23 21:20:37,697 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:20:37,699 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:20:37,699 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:20:37,699 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:20:37,700 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:37" (1/1) ... [2023-11-23 21:20:37,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:20:37,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:37,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:20:37,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:20:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure kick_tx [2023-11-23 21:20:37,785 INFO L138 BoogieDeclarations]: Found implementation of procedure kick_tx [2023-11-23 21:20:37,786 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_set_multicast [2023-11-23 21:20:37,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_set_multicast [2023-11-23 21:20:37,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:20:37,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:20:37,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:20:37,787 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:20:37,788 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2023-11-23 21:20:37,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2023-11-23 21:20:37,790 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_rx_kick [2023-11-23 21:20:37,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_rx_kick [2023-11-23 21:20:37,792 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-23 21:20:37,792 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-23 21:20:37,792 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_do_reset [2023-11-23 21:20:37,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_do_reset [2023-11-23 21:20:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-23 21:20:37,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-23 21:20:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:20:37,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:20:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2023-11-23 21:20:37,794 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2023-11-23 21:20:37,794 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2023-11-23 21:20:37,794 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2023-11-23 21:20:37,794 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-23 21:20:37,794 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-23 21:20:37,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:20:37,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:20:37,795 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2023-11-23 21:20:37,795 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2023-11-23 21:20:37,795 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2023-11-23 21:20:37,795 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2023-11-23 21:20:37,795 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2023-11-23 21:20:37,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2023-11-23 21:20:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2023-11-23 21:20:37,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2023-11-23 21:20:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-23 21:20:37,796 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-23 21:20:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:20:37,797 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:20:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:20:37,797 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:20:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-23 21:20:37,797 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-23 21:20:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-11-23 21:20:37,799 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-11-23 21:20:37,799 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2023-11-23 21:20:37,799 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2023-11-23 21:20:37,800 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 21:20:37,800 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 21:20:37,800 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_update_stats [2023-11-23 21:20:37,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_update_stats [2023-11-23 21:20:37,800 INFO L130 BoogieDeclarations]: Found specification of procedure PRIV [2023-11-23 21:20:37,800 INFO L138 BoogieDeclarations]: Found implementation of procedure PRIV [2023-11-23 21:20:37,800 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-11-23 21:20:37,800 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-11-23 21:20:37,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:20:37,801 INFO L130 BoogieDeclarations]: Found specification of procedure queue_refill [2023-11-23 21:20:37,801 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_refill [2023-11-23 21:20:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2023-11-23 21:20:37,803 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2023-11-23 21:20:37,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:20:37,803 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-23 21:20:37,803 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-23 21:20:37,803 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-23 21:20:37,803 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-23 21:20:37,803 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-23 21:20:37,804 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-23 21:20:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-23 21:20:37,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-23 21:20:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:20:37,805 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:20:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2023-11-23 21:20:37,805 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2023-11-23 21:20:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:20:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-23 21:20:37,805 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-23 21:20:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:20:37,806 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:20:37,806 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:20:37,806 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2023-11-23 21:20:37,806 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2023-11-23 21:20:37,806 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-11-23 21:20:37,806 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-11-23 21:20:37,806 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-23 21:20:37,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-23 21:20:37,807 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 21:20:37,807 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 21:20:37,807 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_get_stats [2023-11-23 21:20:37,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_get_stats [2023-11-23 21:20:37,807 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 21:20:37,807 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 21:20:37,808 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_tx_timeout [2023-11-23 21:20:37,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_tx_timeout [2023-11-23 21:20:37,808 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-11-23 21:20:37,808 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-11-23 21:20:37,808 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-23 21:20:37,809 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-23 21:20:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 21:20:37,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 21:20:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-23 21:20:37,810 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-23 21:20:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_3 [2023-11-23 21:20:37,810 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_3 [2023-11-23 21:20:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:20:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-23 21:20:37,810 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-23 21:20:37,811 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-23 21:20:37,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-23 21:20:37,811 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_irq [2023-11-23 21:20:37,811 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_irq [2023-11-23 21:20:37,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-23 21:20:37,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-23 21:20:37,811 INFO L130 BoogieDeclarations]: Found specification of procedure build_rx_desc [2023-11-23 21:20:37,811 INFO L138 BoogieDeclarations]: Found implementation of procedure build_rx_desc [2023-11-23 21:20:37,811 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2023-11-23 21:20:37,812 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2023-11-23 21:20:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-11-23 21:20:37,812 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-11-23 21:20:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:20:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-23 21:20:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-23 21:20:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2023-11-23 21:20:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2023-11-23 21:20:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_change_mtu [2023-11-23 21:20:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_change_mtu [2023-11-23 21:20:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-23 21:20:37,814 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-23 21:20:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:20:37,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:20:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:20:37,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:20:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_run_bist [2023-11-23 21:20:37,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_run_bist [2023-11-23 21:20:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:20:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:20:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:20:37,821 INFO L130 BoogieDeclarations]: Found specification of procedure clear_rx_desc [2023-11-23 21:20:37,821 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_rx_desc [2023-11-23 21:20:37,822 INFO L130 BoogieDeclarations]: Found specification of procedure phy_intr [2023-11-23 21:20:37,827 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_intr [2023-11-23 21:20:37,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2023-11-23 21:20:37,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2023-11-23 21:20:37,828 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_3 [2023-11-23 21:20:37,828 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_3 [2023-11-23 21:20:37,828 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-23 21:20:37,828 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-23 21:20:37,828 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-11-23 21:20:37,828 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-11-23 21:20:37,828 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-11-23 21:20:37,828 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-11-23 21:20:37,829 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2023-11-23 21:20:37,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2023-11-23 21:20:37,829 INFO L130 BoogieDeclarations]: Found specification of procedure rx_irq [2023-11-23 21:20:37,829 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_irq [2023-11-23 21:20:37,829 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2023-11-23 21:20:37,829 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2023-11-23 21:20:37,829 INFO L130 BoogieDeclarations]: Found specification of procedure do_tx_done [2023-11-23 21:20:37,829 INFO L138 BoogieDeclarations]: Found implementation of procedure do_tx_done [2023-11-23 21:20:37,829 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_disable_interrupts [2023-11-23 21:20:37,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_disable_interrupts [2023-11-23 21:20:37,830 INFO L130 BoogieDeclarations]: Found specification of procedure kick_rx [2023-11-23 21:20:37,830 INFO L138 BoogieDeclarations]: Found implementation of procedure kick_rx [2023-11-23 21:20:37,830 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 21:20:37,830 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 21:20:37,830 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2023-11-23 21:20:37,830 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2023-11-23 21:20:37,830 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-23 21:20:37,830 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-23 21:20:37,830 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-23 21:20:37,831 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-23 21:20:37,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:20:37,831 INFO L130 BoogieDeclarations]: Found specification of procedure rx_refill [2023-11-23 21:20:37,831 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_refill [2023-11-23 21:20:37,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:20:37,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:20:37,831 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_stop [2023-11-23 21:20:37,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_stop [2023-11-23 21:20:38,613 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:20:38,618 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:20:39,721 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:20:42,501 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:20:45,566 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:20:45,566 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:20:45,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:20:45 BoogieIcfgContainer [2023-11-23 21:20:45,569 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:20:45,572 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:20:45,572 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:20:45,577 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:20:45,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:20:33" (1/3) ... [2023-11-23 21:20:45,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47811758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:20:45, skipping insertion in model container [2023-11-23 21:20:45,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:37" (2/3) ... [2023-11-23 21:20:45,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47811758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:20:45, skipping insertion in model container [2023-11-23 21:20:45,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:20:45" (3/3) ... [2023-11-23 21:20:45,581 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--ns83820.ko-entry_point.cil.out.i [2023-11-23 21:20:45,607 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:20:45,607 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:20:45,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:20:45,728 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;@67e20f4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:20:45,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:20:45,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 1196 states, 699 states have (on average 1.2746781115879828) internal successors, (891), 738 states have internal predecessors, (891), 413 states have call successors, (413), 83 states have call predecessors, (413), 82 states have return successors, (405), 401 states have call predecessors, (405), 405 states have call successors, (405) [2023-11-23 21:20:45,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-23 21:20:45,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:45,777 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:45,778 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:20:45,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:45,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1713503587, now seen corresponding path program 1 times [2023-11-23 21:20:45,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:45,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664125452] [2023-11-23 21:20:45,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:45,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 21:20:46,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:46,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664125452] [2023-11-23 21:20:46,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664125452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:46,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:46,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:20:46,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635071347] [2023-11-23 21:20:46,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:46,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:46,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:46,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:46,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:46,988 INFO L87 Difference]: Start difference. First operand has 1196 states, 699 states have (on average 1.2746781115879828) internal successors, (891), 738 states have internal predecessors, (891), 413 states have call successors, (413), 83 states have call predecessors, (413), 82 states have return successors, (405), 401 states have call predecessors, (405), 405 states have call successors, (405) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 21:20:48,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:48,478 INFO L93 Difference]: Finished difference Result 2353 states and 3370 transitions. [2023-11-23 21:20:48,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:48,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2023-11-23 21:20:48,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:48,519 INFO L225 Difference]: With dead ends: 2353 [2023-11-23 21:20:48,519 INFO L226 Difference]: Without dead ends: 1153 [2023-11-23 21:20:48,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:48,547 INFO L413 NwaCegarLoop]: 1457 mSDtfsCounter, 1655 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:48,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 1457 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 21:20:48,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2023-11-23 21:20:48,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1153. [2023-11-23 21:20:48,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 673 states have (on average 1.2466567607726597) internal successors, (839), 701 states have internal predecessors, (839), 399 states have call successors, (399), 81 states have call predecessors, (399), 80 states have return successors, (398), 394 states have call predecessors, (398), 398 states have call successors, (398) [2023-11-23 21:20:48,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1636 transitions. [2023-11-23 21:20:48,780 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1636 transitions. Word has length 85 [2023-11-23 21:20:48,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:48,782 INFO L495 AbstractCegarLoop]: Abstraction has 1153 states and 1636 transitions. [2023-11-23 21:20:48,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 21:20:48,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1636 transitions. [2023-11-23 21:20:48,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 21:20:48,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:48,801 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:48,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:20:48,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:20:48,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:48,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1759485154, now seen corresponding path program 1 times [2023-11-23 21:20:48,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:48,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148477840] [2023-11-23 21:20:48,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:48,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-23 21:20:49,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:49,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148477840] [2023-11-23 21:20:49,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148477840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:49,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:49,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:20:49,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387257929] [2023-11-23 21:20:49,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:49,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:49,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:49,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:49,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:49,174 INFO L87 Difference]: Start difference. First operand 1153 states and 1636 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 21:20:50,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:50,337 INFO L93 Difference]: Finished difference Result 2202 states and 3112 transitions. [2023-11-23 21:20:50,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:50,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2023-11-23 21:20:50,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:50,348 INFO L225 Difference]: With dead ends: 2202 [2023-11-23 21:20:50,348 INFO L226 Difference]: Without dead ends: 1060 [2023-11-23 21:20:50,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:50,356 INFO L413 NwaCegarLoop]: 1301 mSDtfsCounter, 1485 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:50,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1301 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:20:50,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2023-11-23 21:20:50,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1060. [2023-11-23 21:20:50,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 614 states have (on average 1.237785016286645) internal successors, (760), 636 states have internal predecessors, (760), 366 states have call successors, (366), 80 states have call predecessors, (366), 79 states have return successors, (365), 361 states have call predecessors, (365), 365 states have call successors, (365) [2023-11-23 21:20:50,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1491 transitions. [2023-11-23 21:20:50,449 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1491 transitions. Word has length 107 [2023-11-23 21:20:50,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:50,450 INFO L495 AbstractCegarLoop]: Abstraction has 1060 states and 1491 transitions. [2023-11-23 21:20:50,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 21:20:50,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1491 transitions. [2023-11-23 21:20:50,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 21:20:50,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:50,456 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:50,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:20:50,457 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:20:50,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:50,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1643872468, now seen corresponding path program 1 times [2023-11-23 21:20:50,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:50,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631656472] [2023-11-23 21:20:50,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:50,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-23 21:20:50,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:50,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631656472] [2023-11-23 21:20:50,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631656472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:50,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:50,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:20:50,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105637133] [2023-11-23 21:20:50,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:50,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:50,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:50,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:50,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:50,867 INFO L87 Difference]: Start difference. First operand 1060 states and 1491 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 21:20:53,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:53,212 INFO L93 Difference]: Finished difference Result 2858 states and 3989 transitions. [2023-11-23 21:20:53,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:53,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 110 [2023-11-23 21:20:53,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:53,232 INFO L225 Difference]: With dead ends: 2858 [2023-11-23 21:20:53,233 INFO L226 Difference]: Without dead ends: 1809 [2023-11-23 21:20:53,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:53,242 INFO L413 NwaCegarLoop]: 1335 mSDtfsCounter, 1027 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:53,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 2562 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 21:20:53,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2023-11-23 21:20:53,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1806. [2023-11-23 21:20:53,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1049 states have (on average 1.2316491897044806) internal successors, (1292), 1088 states have internal predecessors, (1292), 610 states have call successors, (610), 147 states have call predecessors, (610), 146 states have return successors, (609), 601 states have call predecessors, (609), 609 states have call successors, (609) [2023-11-23 21:20:53,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2511 transitions. [2023-11-23 21:20:53,418 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2511 transitions. Word has length 110 [2023-11-23 21:20:53,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:53,418 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2511 transitions. [2023-11-23 21:20:53,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 21:20:53,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2511 transitions. [2023-11-23 21:20:53,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-23 21:20:53,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:53,430 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-23 21:20:53,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:20:53,431 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:20:53,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:53,431 INFO L85 PathProgramCache]: Analyzing trace with hash 928250655, now seen corresponding path program 1 times [2023-11-23 21:20:53,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:53,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191355965] [2023-11-23 21:20:53,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:53,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:53,733 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-23 21:20:53,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:53,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191355965] [2023-11-23 21:20:53,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191355965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:53,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:53,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:20:53,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280821838] [2023-11-23 21:20:53,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:53,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:53,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:53,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:53,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:53,736 INFO L87 Difference]: Start difference. First operand 1806 states and 2511 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 21:20:54,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:54,808 INFO L93 Difference]: Finished difference Result 3252 states and 4538 transitions. [2023-11-23 21:20:54,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:54,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 156 [2023-11-23 21:20:54,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:54,828 INFO L225 Difference]: With dead ends: 3252 [2023-11-23 21:20:54,828 INFO L226 Difference]: Without dead ends: 1460 [2023-11-23 21:20:54,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:54,837 INFO L413 NwaCegarLoop]: 1200 mSDtfsCounter, 1366 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:54,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 1200 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:20:54,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2023-11-23 21:20:55,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1460. [2023-11-23 21:20:55,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 849 states have (on average 1.2355712603062425) internal successors, (1049), 874 states have internal predecessors, (1049), 498 states have call successors, (498), 113 states have call predecessors, (498), 112 states have return successors, (497), 489 states have call predecessors, (497), 497 states have call successors, (497) [2023-11-23 21:20:55,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2044 transitions. [2023-11-23 21:20:55,076 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2044 transitions. Word has length 156 [2023-11-23 21:20:55,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:55,080 INFO L495 AbstractCegarLoop]: Abstraction has 1460 states and 2044 transitions. [2023-11-23 21:20:55,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 21:20:55,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2044 transitions. [2023-11-23 21:20:55,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-23 21:20:55,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:55,089 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 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] [2023-11-23 21:20:55,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:20:55,090 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:20:55,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:55,091 INFO L85 PathProgramCache]: Analyzing trace with hash -782236124, now seen corresponding path program 1 times [2023-11-23 21:20:55,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:55,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103377055] [2023-11-23 21:20:55,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:55,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:55,637 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-11-23 21:20:55,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:55,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103377055] [2023-11-23 21:20:55,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103377055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:55,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:55,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:20:55,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116113921] [2023-11-23 21:20:55,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:55,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:55,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:55,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:55,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:55,641 INFO L87 Difference]: Start difference. First operand 1460 states and 2044 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 21:20:57,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:57,846 INFO L93 Difference]: Finished difference Result 3543 states and 4964 transitions. [2023-11-23 21:20:57,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:57,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 173 [2023-11-23 21:20:57,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:57,865 INFO L225 Difference]: With dead ends: 3543 [2023-11-23 21:20:57,865 INFO L226 Difference]: Without dead ends: 2097 [2023-11-23 21:20:57,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:57,874 INFO L413 NwaCegarLoop]: 1769 mSDtfsCounter, 868 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 2891 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:57,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 2891 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 21:20:57,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2023-11-23 21:20:58,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 2097. [2023-11-23 21:20:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 1227 states have (on average 1.2298288508557458) internal successors, (1509), 1261 states have internal predecessors, (1509), 705 states have call successors, (705), 165 states have call predecessors, (705), 164 states have return successors, (704), 692 states have call predecessors, (704), 704 states have call successors, (704) [2023-11-23 21:20:58,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 2918 transitions. [2023-11-23 21:20:58,167 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 2918 transitions. Word has length 173 [2023-11-23 21:20:58,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:58,168 INFO L495 AbstractCegarLoop]: Abstraction has 2097 states and 2918 transitions. [2023-11-23 21:20:58,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 21:20:58,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 2918 transitions. [2023-11-23 21:20:58,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-23 21:20:58,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:58,180 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 21:20:58,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:20:58,181 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:20:58,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:58,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1931332005, now seen corresponding path program 1 times [2023-11-23 21:20:58,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:58,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419447922] [2023-11-23 21:20:58,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:58,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2023-11-23 21:20:59,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:59,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419447922] [2023-11-23 21:20:59,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419447922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:59,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:59,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:20:59,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990143831] [2023-11-23 21:20:59,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:59,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:20:59,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:59,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:20:59,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:20:59,368 INFO L87 Difference]: Start difference. First operand 2097 states and 2918 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 21:21:02,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:02,745 INFO L93 Difference]: Finished difference Result 3492 states and 4873 transitions. [2023-11-23 21:21:02,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:21:02,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 192 [2023-11-23 21:21:02,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:02,780 INFO L225 Difference]: With dead ends: 3492 [2023-11-23 21:21:02,780 INFO L226 Difference]: Without dead ends: 3489 [2023-11-23 21:21:02,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:21:02,784 INFO L413 NwaCegarLoop]: 1268 mSDtfsCounter, 988 mSDsluCounter, 2353 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 3621 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:02,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 3621 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-23 21:21:02,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3489 states. [2023-11-23 21:21:03,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3489 to 3445. [2023-11-23 21:21:03,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3445 states, 2049 states have (on average 1.2498779892630552) internal successors, (2561), 2120 states have internal predecessors, (2561), 1121 states have call successors, (1121), 282 states have call predecessors, (1121), 274 states have return successors, (1122), 1075 states have call predecessors, (1122), 1120 states have call successors, (1122) [2023-11-23 21:21:03,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3445 states to 3445 states and 4804 transitions. [2023-11-23 21:21:03,190 INFO L78 Accepts]: Start accepts. Automaton has 3445 states and 4804 transitions. Word has length 192 [2023-11-23 21:21:03,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:03,192 INFO L495 AbstractCegarLoop]: Abstraction has 3445 states and 4804 transitions. [2023-11-23 21:21:03,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 21:21:03,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3445 states and 4804 transitions. [2023-11-23 21:21:03,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-23 21:21:03,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:03,204 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 21:21:03,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:21:03,205 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:21:03,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:03,205 INFO L85 PathProgramCache]: Analyzing trace with hash -85278011, now seen corresponding path program 1 times [2023-11-23 21:21:03,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:03,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107123157] [2023-11-23 21:21:03,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:03,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2023-11-23 21:21:03,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:03,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107123157] [2023-11-23 21:21:03,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107123157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:03,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:03,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:21:03,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946975374] [2023-11-23 21:21:03,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:03,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:03,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:03,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:03,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:03,829 INFO L87 Difference]: Start difference. First operand 3445 states and 4804 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 21:21:05,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:05,545 INFO L93 Difference]: Finished difference Result 6882 states and 9599 transitions. [2023-11-23 21:21:05,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:05,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 195 [2023-11-23 21:21:05,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:05,572 INFO L225 Difference]: With dead ends: 6882 [2023-11-23 21:21:05,573 INFO L226 Difference]: Without dead ends: 3451 [2023-11-23 21:21:05,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:05,587 INFO L413 NwaCegarLoop]: 1199 mSDtfsCounter, 1 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:05,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2395 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 21:21:05,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3451 states. [2023-11-23 21:21:05,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3451 to 3447. [2023-11-23 21:21:05,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3447 states, 2051 states have (on average 1.2496343247196489) internal successors, (2563), 2122 states have internal predecessors, (2563), 1121 states have call successors, (1121), 282 states have call predecessors, (1121), 274 states have return successors, (1122), 1075 states have call predecessors, (1122), 1120 states have call successors, (1122) [2023-11-23 21:21:05,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 4806 transitions. [2023-11-23 21:21:05,902 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 4806 transitions. Word has length 195 [2023-11-23 21:21:05,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:05,903 INFO L495 AbstractCegarLoop]: Abstraction has 3447 states and 4806 transitions. [2023-11-23 21:21:05,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 21:21:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 4806 transitions. [2023-11-23 21:21:05,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-23 21:21:05,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:05,914 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 21:21:05,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:21:05,914 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:21:05,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:05,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1265415429, now seen corresponding path program 1 times [2023-11-23 21:21:05,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:05,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633243253] [2023-11-23 21:21:05,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:05,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2023-11-23 21:21:06,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:06,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633243253] [2023-11-23 21:21:06,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633243253] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:21:06,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109193083] [2023-11-23 21:21:06,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:06,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:21:06,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:21:06,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:21:06,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:21:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:07,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 2432 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:21:07,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:21:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-23 21:21:07,627 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:21:07,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109193083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:07,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:21:07,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 21:21:07,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055182610] [2023-11-23 21:21:07,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:07,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:21:07,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:07,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:21:07,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:21:07,630 INFO L87 Difference]: Start difference. First operand 3447 states and 4806 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-23 21:21:09,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:09,877 INFO L93 Difference]: Finished difference Result 5620 states and 7782 transitions. [2023-11-23 21:21:09,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:21:09,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 204 [2023-11-23 21:21:09,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:09,879 INFO L225 Difference]: With dead ends: 5620 [2023-11-23 21:21:09,879 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:21:09,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:21:09,898 INFO L413 NwaCegarLoop]: 1184 mSDtfsCounter, 58 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3481 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:09,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3481 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 21:21:09,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:21:09,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:21:09,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:09,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:21:09,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 204 [2023-11-23 21:21:09,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:09,902 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:21:09,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-23 21:21:09,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:21:09,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:21:09,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:21:09,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 21:21:10,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb153a09-acb1-43c4-8d78-1bc8f57fd035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-23 21:21:10,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.