./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-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f48eb3-c4ea-4e85-8ebc-dfbe39a3acc8/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f48eb3-c4ea-4e85-8ebc-dfbe39a3acc8/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f48eb3-c4ea-4e85-8ebc-dfbe39a3acc8/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f48eb3-c4ea-4e85-8ebc-dfbe39a3acc8/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f48eb3-c4ea-4e85-8ebc-dfbe39a3acc8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f48eb3-c4ea-4e85-8ebc-dfbe39a3acc8/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d57db9f03a5170fd6970a4ac4989029ee35a0e85ad6a1c5337395bb7ff185d1b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:38:08,087 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:38:08,156 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f48eb3-c4ea-4e85-8ebc-dfbe39a3acc8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 22:38:08,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:38:08,162 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:38:08,187 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:38:08,187 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:38:08,188 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:38:08,189 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:38:08,189 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:38:08,190 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:38:08,190 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:38:08,191 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:38:08,192 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:38:08,192 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:38:08,193 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:38:08,193 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:38:08,193 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:38:08,194 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:38:08,194 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:38:08,195 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:38:08,195 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:38:08,196 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:38:08,196 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:38:08,197 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:38:08,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:38:08,198 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:38:08,198 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:38:08,199 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:38:08,199 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:38:08,199 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:38:08,200 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:38:08,200 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:38:08,200 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:38:08,201 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:38:08,201 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:38:08,201 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f48eb3-c4ea-4e85-8ebc-dfbe39a3acc8/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f48eb3-c4ea-4e85-8ebc-dfbe39a3acc8/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d57db9f03a5170fd6970a4ac4989029ee35a0e85ad6a1c5337395bb7ff185d1b [2023-11-06 22:38:08,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:38:08,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:38:08,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:38:08,515 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:38:08,516 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:38:08,517 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f48eb3-c4ea-4e85-8ebc-dfbe39a3acc8/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i [2023-11-06 22:38:11,655 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:38:12,419 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:38:12,420 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f48eb3-c4ea-4e85-8ebc-dfbe39a3acc8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i [2023-11-06 22:38:12,483 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f48eb3-c4ea-4e85-8ebc-dfbe39a3acc8/bin/uautomizer-verify-WvqO1wxjHP/data/8e927f407/6cb3e5ac1028461d98b1a5cb545c34b5/FLAGd49448040 [2023-11-06 22:38:12,507 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f48eb3-c4ea-4e85-8ebc-dfbe39a3acc8/bin/uautomizer-verify-WvqO1wxjHP/data/8e927f407/6cb3e5ac1028461d98b1a5cb545c34b5 [2023-11-06 22:38:12,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:38:12,518 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:38:12,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:38:12,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:38:12,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:38:12,529 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:38:12" (1/1) ... [2023-11-06 22:38:12,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e143c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:12, skipping insertion in model container [2023-11-06 22:38:12,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:38:12" (1/1) ... [2023-11-06 22:38:12,806 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:38:17,083 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_54f48eb3-c4ea-4e85-8ebc-dfbe39a3acc8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i[477998,478011] [2023-11-06 22:38:17,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:38:17,608 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:38:17,836 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [9387] [2023-11-06 22:38:17,838 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapq %0": "=r" (val): "0" (val)); [9394] [2023-11-06 22:38:17,840 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [9435] [2023-11-06 22:38:17,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [9438] [2023-11-06 22:38:17,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [9441] [2023-11-06 22:38:17,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [9444] [2023-11-06 22:38:17,848 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; subl %2, %0; sete %1": "+m" (v->counter), "=qm" (c): "er" (i): "memory"); [9532-9533] [2023-11-06 22:38:17,849 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; cmpxchgb %2,%1": "=a" (__ret), "+m" (*__ptr): "q" (__new), "0" (__old): "memory"); [9552-9553] [2023-11-06 22:38:17,851 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; cmpxchgw %2,%1": "=a" (__ret), "+m" (*__ptr___0): "r" (__new), "0" (__old): "memory"); [9557-9558] [2023-11-06 22:38:17,851 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; cmpxchgl %2,%1": "=a" (__ret), "+m" (*__ptr___1): "r" (__new), "0" (__old): "memory"); [9562-9563] [2023-11-06 22:38:17,852 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; cmpxchgq %2,%1": "=a" (__ret), "+m" (*__ptr___2): "r" (__new), "0" (__old): "memory"); [9567-9568] [2023-11-06 22:38:17,865 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/scatterlist.h"), "i" (123), "i" (12UL)); [10029-10030] [2023-11-06 22:38:17,866 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/scatterlist.h"), "i" (124), "i" (12UL)); [10037-10038] [2023-11-06 22:38:17,871 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)); [10114-10115] [2023-11-06 22:38:17,873 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)); [10143-10144] [2023-11-06 22:38:17,875 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" (56), "i" (12UL)); [10191-10192] [2023-11-06 22:38:17,876 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" (58), "i" (12UL)); [10200-10201] [2023-11-06 22:38:17,877 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" (70), "i" (12UL)); [10224-10225] [2023-11-06 22:38:17,879 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (108), "i" (12UL)); [10254-10255] [2023-11-06 22:38:17,880 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (120), "i" (12UL)); [10284-10285] [2023-11-06 22:38:18,086 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--32_7a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/4833/dscv_tempdir/dscv/ri/32_7a/drivers/infiniband/ulp/isert/ib_isert.c"), "i" (808), "i" (12UL)); [11596-11597] [2023-11-06 22:38:18,529 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_54f48eb3-c4ea-4e85-8ebc-dfbe39a3acc8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i[477998,478011] [2023-11-06 22:38:18,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:38:18,752 WARN L672 CHandler]: The function __cmpxchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:38:18,752 WARN L672 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:38:18,752 WARN L672 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:38:18,760 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:38:18,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:18 WrapperNode [2023-11-06 22:38:18,761 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:38:18,763 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:38:18,763 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:38:18,763 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:38:18,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:18" (1/1) ... [2023-11-06 22:38:18,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:18" (1/1) ... [2023-11-06 22:38:19,229 INFO L138 Inliner]: procedures = 483, calls = 3016, calls flagged for inlining = 237, calls inlined = 184, statements flattened = 7455 [2023-11-06 22:38:19,230 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:38:19,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:38:19,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:38:19,231 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:38:19,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:18" (1/1) ... [2023-11-06 22:38:19,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:18" (1/1) ... [2023-11-06 22:38:19,309 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:18" (1/1) ... [2023-11-06 22:38:19,310 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:18" (1/1) ... [2023-11-06 22:38:19,464 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:18" (1/1) ... [2023-11-06 22:38:19,490 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:18" (1/1) ... [2023-11-06 22:38:19,528 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:18" (1/1) ... [2023-11-06 22:38:19,561 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:18" (1/1) ... [2023-11-06 22:38:19,616 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:38:19,618 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:38:19,618 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:38:19,618 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:38:19,619 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:18" (1/1) ... [2023-11-06 22:38:19,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:38:19,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f48eb3-c4ea-4e85-8ebc-dfbe39a3acc8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:19,654 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f48eb3-c4ea-4e85-8ebc-dfbe39a3acc8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:38:19,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f48eb3-c4ea-4e85-8ebc-dfbe39a3acc8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:38:19,695 INFO L130 BoogieDeclarations]: Found specification of procedure ib_wc_status_msg [2023-11-06 22:38:19,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_wc_status_msg [2023-11-06 22:38:19,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-06 22:38:19,697 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-06 22:38:19,697 INFO L130 BoogieDeclarations]: Found specification of procedure isert_setup_id [2023-11-06 22:38:19,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_setup_id [2023-11-06 22:38:19,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-06 22:38:19,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-06 22:38:19,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_isert_conn [2023-11-06 22:38:19,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_isert_conn [2023-11-06 22:38:19,699 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2023-11-06 22:38:19,699 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2023-11-06 22:38:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2023-11-06 22:38:19,701 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2023-11-06 22:38:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_stop_dataout_timer [2023-11-06 22:38:19,702 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_stop_dataout_timer [2023-11-06 22:38:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure rdma_destroy_id [2023-11-06 22:38:19,702 INFO L138 BoogieDeclarations]: Found implementation of procedure rdma_destroy_id [2023-11-06 22:38:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2023-11-06 22:38:19,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2023-11-06 22:38:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure isert_cq_work [2023-11-06 22:38:19,703 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_cq_work [2023-11-06 22:38:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-06 22:38:19,703 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-06 22:38:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure ib_post_recv [2023-11-06 22:38:19,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_post_recv [2023-11-06 22:38:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_sync_single_for_device [2023-11-06 22:38:19,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_sync_single_for_device [2023-11-06 22:38:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-06 22:38:19,704 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-06 22:38:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-06 22:38:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_isert_conn [2023-11-06 22:38:19,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_isert_conn [2023-11-06 22:38:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_unmap_single [2023-11-06 22:38:19,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_unmap_single [2023-11-06 22:38:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure isert_init_send_wr [2023-11-06 22:38:19,704 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_init_send_wr [2023-11-06 22:38:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_np_accept_mutex_of_isert_np [2023-11-06 22:38:19,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_np_accept_mutex_of_isert_np [2023-11-06 22:38:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-06 22:38:19,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-06 22:38:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-06 22:38:19,706 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-06 22:38:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_np_accept_mutex_of_isert_np [2023-11-06 22:38:19,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_np_accept_mutex_of_isert_np [2023-11-06 22:38:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:38:19,707 INFO L130 BoogieDeclarations]: Found specification of procedure ib_sg_dma_address [2023-11-06 22:38:19,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_sg_dma_address [2023-11-06 22:38:19,708 INFO L130 BoogieDeclarations]: Found specification of procedure isert_wait_conn [2023-11-06 22:38:19,708 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_wait_conn [2023-11-06 22:38:19,708 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u64~0~X~int~X~int~TO~VOID [2023-11-06 22:38:19,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u64~0~X~int~X~int~TO~VOID [2023-11-06 22:38:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-06 22:38:19,709 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-06 22:38:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2023-11-06 22:38:19,709 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2023-11-06 22:38:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_map_single [2023-11-06 22:38:19,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_map_single [2023-11-06 22:38:19,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-06 22:38:19,710 INFO L130 BoogieDeclarations]: Found specification of procedure isert_conn_terminate [2023-11-06 22:38:19,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_conn_terminate [2023-11-06 22:38:19,710 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-06 22:38:19,710 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-06 22:38:19,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-06 22:38:19,711 INFO L130 BoogieDeclarations]: Found specification of procedure isert_prot_cmd [2023-11-06 22:38:19,711 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_prot_cmd [2023-11-06 22:38:19,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:38:19,711 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-06 22:38:19,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-06 22:38:19,711 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_interruptible [2023-11-06 22:38:19,712 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_interruptible [2023-11-06 22:38:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-06 22:38:19,712 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-06 22:38:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure isert_release_work [2023-11-06 22:38:19,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_release_work [2023-11-06 22:38:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_np [2023-11-06 22:38:19,713 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_np [2023-11-06 22:38:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure isert_comp_put [2023-11-06 22:38:19,713 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_comp_put [2023-11-06 22:38:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-11-06 22:38:19,713 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-11-06 22:38:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2023-11-06 22:38:19,713 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2023-11-06 22:38:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure sg_next [2023-11-06 22:38:19,714 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_next [2023-11-06 22:38:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_from_buffer [2023-11-06 22:38:19,714 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_from_buffer [2023-11-06 22:38:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-06 22:38:19,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-06 22:38:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:38:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2023-11-06 22:38:19,714 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2023-11-06 22:38:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:38:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2023-11-06 22:38:19,715 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2023-11-06 22:38:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:38:19,716 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-06 22:38:19,716 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-06 22:38:19,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-06 22:38:19,716 INFO L130 BoogieDeclarations]: Found specification of procedure isert_completion_put [2023-11-06 22:38:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_completion_put [2023-11-06 22:38:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-11-06 22:38:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-11-06 22:38:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure isert_unmap_data_buf [2023-11-06 22:38:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_unmap_data_buf [2023-11-06 22:38:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure isert_inv_rkey [2023-11-06 22:38:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_inv_rkey [2023-11-06 22:38:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-11-06 22:38:19,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-11-06 22:38:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_sync_single_for_cpu [2023-11-06 22:38:19,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_sync_single_for_cpu [2023-11-06 22:38:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-06 22:38:19,718 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-06 22:38:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure isert_allocate_cmd [2023-11-06 22:38:19,719 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_allocate_cmd [2023-11-06 22:38:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure isert_do_control_comp [2023-11-06 22:38:19,719 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_do_control_comp [2023-11-06 22:38:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_conn [2023-11-06 22:38:19,719 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_conn [2023-11-06 22:38:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure isert_connect_release [2023-11-06 22:38:19,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_connect_release [2023-11-06 22:38:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_comps [2023-11-06 22:38:19,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_comps [2023-11-06 22:38:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:38:19,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:38:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2023-11-06 22:38:19,720 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2023-11-06 22:38:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-06 22:38:19,721 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-06 22:38:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2023-11-06 22:38:19,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2023-11-06 22:38:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2023-11-06 22:38:19,724 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2023-11-06 22:38:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-06 22:38:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-06 22:38:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure isert_device_put [2023-11-06 22:38:19,726 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_device_put [2023-11-06 22:38:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-06 22:38:19,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-06 22:38:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure isert_map_data_buf [2023-11-06 22:38:19,728 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_map_data_buf [2023-11-06 22:38:19,733 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-06 22:38:19,733 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-06 22:38:19,733 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_conn [2023-11-06 22:38:19,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_conn [2023-11-06 22:38:19,733 INFO L130 BoogieDeclarations]: Found specification of procedure ib_post_send [2023-11-06 22:38:19,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_post_send [2023-11-06 22:38:19,734 INFO L130 BoogieDeclarations]: Found specification of procedure isert_init_tx_hdrs [2023-11-06 22:38:19,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_init_tx_hdrs [2023-11-06 22:38:19,735 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2023-11-06 22:38:19,735 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2023-11-06 22:38:19,735 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2023-11-06 22:38:19,735 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2023-11-06 22:38:19,735 INFO L130 BoogieDeclarations]: Found specification of procedure ib_free_fast_reg_page_list [2023-11-06 22:38:19,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_free_fast_reg_page_list [2023-11-06 22:38:19,735 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-11-06 22:38:19,735 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-11-06 22:38:19,735 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-06 22:38:19,736 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-06 22:38:19,736 INFO L130 BoogieDeclarations]: Found specification of procedure isert_aborted_task [2023-11-06 22:38:19,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_aborted_task [2023-11-06 22:38:19,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-06 22:38:19,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-06 22:38:19,736 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2023-11-06 22:38:19,736 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2023-11-06 22:38:19,737 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_response [2023-11-06 22:38:19,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_response [2023-11-06 22:38:19,737 INFO L130 BoogieDeclarations]: Found specification of procedure isert_wait4flush [2023-11-06 22:38:19,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_wait4flush [2023-11-06 22:38:19,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-06 22:38:19,737 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-06 22:38:19,737 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:38:19,737 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:38:19,737 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-06 22:38:19,737 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-06 22:38:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_login_buf [2023-11-06 22:38:19,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_login_buf [2023-11-06 22:38:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-11-06 22:38:19,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-11-06 22:38:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-11-06 22:38:19,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-11-06 22:38:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:38:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-06 22:38:19,738 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-06 22:38:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_priv_cmd [2023-11-06 22:38:19,739 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_priv_cmd [2023-11-06 22:38:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_nopin [2023-11-06 22:38:19,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_nopin [2023-11-06 22:38:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:38:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2023-11-06 22:38:19,739 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2023-11-06 22:38:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure isert_reg_rdma [2023-11-06 22:38:19,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_reg_rdma [2023-11-06 22:38:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:38:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-06 22:38:19,812 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-06 22:38:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure isert_post_recv [2023-11-06 22:38:19,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_post_recv [2023-11-06 22:38:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-11-06 22:38:19,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-11-06 22:38:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-06 22:38:19,812 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-06 22:38:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-11-06 22:38:19,813 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-11-06 22:38:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-06 22:38:19,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-06 22:38:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-06 22:38:19,813 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-06 22:38:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure isert_rdma_post_recvl [2023-11-06 22:38:19,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_rdma_post_recvl [2023-11-06 22:38:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure isert_conn_free_fastreg_pool [2023-11-06 22:38:19,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_conn_free_fastreg_pool [2023-11-06 22:38:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure transport_send_check_condition_and_sense [2023-11-06 22:38:19,814 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_send_check_condition_and_sense [2023-11-06 22:38:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-11-06 22:38:19,814 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-11-06 22:38:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure isert_reg_sig_mr [2023-11-06 22:38:19,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_reg_sig_mr [2023-11-06 22:38:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure transport_generic_free_cmd [2023-11-06 22:38:19,814 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_generic_free_cmd [2023-11-06 22:38:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure isert_unmap_tx_desc [2023-11-06 22:38:19,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_unmap_tx_desc [2023-11-06 22:38:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-06 22:38:19,815 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-06 22:38:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_device_list_mutex [2023-11-06 22:38:19,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_device_list_mutex [2023-11-06 22:38:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_device_list_mutex [2023-11-06 22:38:19,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_device_list_mutex [2023-11-06 22:38:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure __alloc_workqueue_key [2023-11-06 22:38:19,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __alloc_workqueue_key [2023-11-06 22:38:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2023-11-06 22:38:19,815 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2023-11-06 22:38:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure isert_handle_prot_cmd [2023-11-06 22:38:19,816 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_handle_prot_cmd [2023-11-06 22:38:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dereg_mr [2023-11-06 22:38:19,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dereg_mr [2023-11-06 22:38:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure ib_req_notify_cq [2023-11-06 22:38:19,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_req_notify_cq [2023-11-06 22:38:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-06 22:38:19,816 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-06 22:38:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure isert_check_pi_status [2023-11-06 22:38:19,816 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_check_pi_status [2023-11-06 22:38:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2023-11-06 22:38:19,817 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2023-11-06 22:38:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:38:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure isert_create_send_desc [2023-11-06 22:38:19,817 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_create_send_desc [2023-11-06 22:38:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-06 22:38:19,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-06 22:38:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure ib_sg_dma_len [2023-11-06 22:38:19,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_sg_dma_len [2023-11-06 22:38:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure isert_fast_reg_mr [2023-11-06 22:38:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_fast_reg_mr [2023-11-06 22:38:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-06 22:38:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-06 22:38:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2023-11-06 22:38:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2023-11-06 22:38:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure isert_post_response [2023-11-06 22:38:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_post_response [2023-11-06 22:38:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure ib_alloc_fast_reg_mr [2023-11-06 22:38:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_alloc_fast_reg_mr [2023-11-06 22:38:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-06 22:38:19,819 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-06 22:38:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure isert_rx_login_req [2023-11-06 22:38:19,819 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_rx_login_req [2023-11-06 22:38:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2023-11-06 22:38:19,819 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2023-11-06 22:38:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_mapping_error [2023-11-06 22:38:19,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_mapping_error [2023-11-06 22:38:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:38:19,820 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-11-06 22:38:19,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-11-06 22:38:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure target_put_sess_cmd [2023-11-06 22:38:19,824 INFO L138 BoogieDeclarations]: Found implementation of procedure target_put_sess_cmd [2023-11-06 22:38:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure isert_set_dif_domain [2023-11-06 22:38:19,824 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_set_dif_domain [2023-11-06 22:38:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2023-11-06 22:38:19,824 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2023-11-06 22:38:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_pd [2023-11-06 22:38:19,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_pd [2023-11-06 22:38:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure ib_alloc_fast_reg_page_list [2023-11-06 22:38:19,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_alloc_fast_reg_page_list [2023-11-06 22:38:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_build_rsp_pdu [2023-11-06 22:38:19,825 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_build_rsp_pdu [2023-11-06 22:38:20,979 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:38:20,983 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:38:21,233 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-06 22:38:30,077 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:38:30,109 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:38:30,109 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:38:30,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:38:30 BoogieIcfgContainer [2023-11-06 22:38:30,115 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:38:30,122 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:38:30,122 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:38:30,126 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:38:30,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:38:12" (1/3) ... [2023-11-06 22:38:30,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58000c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:38:30, skipping insertion in model container [2023-11-06 22:38:30,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:18" (2/3) ... [2023-11-06 22:38:30,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58000c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:38:30, skipping insertion in model container [2023-11-06 22:38:30,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:38:30" (3/3) ... [2023-11-06 22:38:30,130 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i [2023-11-06 22:38:30,150 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:38:30,150 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:38:30,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:38:30,302 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@42d2b1b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:38:30,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:38:30,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 2688 states, 1820 states have (on average 1.3186813186813187) internal successors, (2400), 1880 states have internal predecessors, (2400), 734 states have call successors, (734), 133 states have call predecessors, (734), 132 states have return successors, (728), 717 states have call predecessors, (728), 728 states have call successors, (728) [2023-11-06 22:38:30,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-06 22:38:30,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:38:30,356 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:38:30,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:38:30,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:30,365 INFO L85 PathProgramCache]: Analyzing trace with hash 66636894, now seen corresponding path program 1 times [2023-11-06 22:38:30,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:30,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261498844] [2023-11-06 22:38:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:30,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:31,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:38:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:31,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:38:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:31,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:38:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:31,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 22:38:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:31,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:38:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:31,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:38:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:31,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:38:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:31,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 22:38:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:31,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:38:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:31,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-06 22:38:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:31,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:38:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:31,626 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-06 22:38:31,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:31,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261498844] [2023-11-06 22:38:31,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261498844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:31,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:31,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:38:31,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365039888] [2023-11-06 22:38:31,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:31,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:38:31,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:31,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:38:31,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:38:31,693 INFO L87 Difference]: Start difference. First operand has 2688 states, 1820 states have (on average 1.3186813186813187) internal successors, (2400), 1880 states have internal predecessors, (2400), 734 states have call successors, (734), 133 states have call predecessors, (734), 132 states have return successors, (728), 717 states have call predecessors, (728), 728 states have call successors, (728) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 22:38:35,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:38:37,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:38:39,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:38:53,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:38:53,328 INFO L93 Difference]: Finished difference Result 6294 states and 9501 transitions. [2023-11-06 22:38:53,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:38:53,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2023-11-06 22:38:53,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:38:53,404 INFO L225 Difference]: With dead ends: 6294 [2023-11-06 22:38:53,404 INFO L226 Difference]: Without dead ends: 3588 [2023-11-06 22:38:53,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:38:53,440 INFO L413 NwaCegarLoop]: 2767 mSDtfsCounter, 2623 mSDsluCounter, 4452 mSDsCounter, 0 mSdLazyCounter, 4107 mSolverCounterSat, 2388 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2721 SdHoareTripleChecker+Valid, 7219 SdHoareTripleChecker+Invalid, 6498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2388 IncrementalHoareTripleChecker+Valid, 4107 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:38:53,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2721 Valid, 7219 Invalid, 6498 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2388 Valid, 4107 Invalid, 3 Unknown, 0 Unchecked, 20.7s Time] [2023-11-06 22:38:53,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3588 states. [2023-11-06 22:38:53,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3588 to 2665. [2023-11-06 22:38:53,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 1805 states have (on average 1.30803324099723) internal successors, (2361), 1857 states have internal predecessors, (2361), 728 states have call successors, (728), 132 states have call predecessors, (728), 131 states have return successors, (716), 705 states have call predecessors, (716), 716 states have call successors, (716) [2023-11-06 22:38:53,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 3805 transitions. [2023-11-06 22:38:53,837 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 3805 transitions. Word has length 86 [2023-11-06 22:38:53,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:38:53,837 INFO L495 AbstractCegarLoop]: Abstraction has 2665 states and 3805 transitions. [2023-11-06 22:38:53,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 22:38:53,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 3805 transitions. [2023-11-06 22:38:53,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-06 22:38:53,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:38:53,848 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:38:53,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:38:53,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:38:53,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:53,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1800741344, now seen corresponding path program 1 times [2023-11-06 22:38:53,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:53,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073267593] [2023-11-06 22:38:53,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:53,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:54,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:38:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:54,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:38:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:54,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:38:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:54,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 22:38:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:54,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:38:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:54,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:38:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:54,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:38:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:54,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 22:38:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:54,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:38:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:54,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-06 22:38:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:54,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:38:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-06 22:38:54,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:54,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073267593] [2023-11-06 22:38:54,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073267593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:54,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:54,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:38:54,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159034732] [2023-11-06 22:38:54,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:54,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:38:54,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:54,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:38:54,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:38:54,539 INFO L87 Difference]: Start difference. First operand 2665 states and 3805 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-06 22:39:03,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:39:08,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:39:10,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:39:12,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:39:22,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:39:22,203 INFO L93 Difference]: Finished difference Result 9224 states and 13632 transitions. [2023-11-06 22:39:22,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:39:22,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 86 [2023-11-06 22:39:22,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:39:22,264 INFO L225 Difference]: With dead ends: 9224 [2023-11-06 22:39:22,265 INFO L226 Difference]: Without dead ends: 6580 [2023-11-06 22:39:22,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:39:22,284 INFO L413 NwaCegarLoop]: 2739 mSDtfsCounter, 7973 mSDsluCounter, 6768 mSDsCounter, 0 mSdLazyCounter, 5747 mSolverCounterSat, 5017 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8390 SdHoareTripleChecker+Valid, 9507 SdHoareTripleChecker+Invalid, 10767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5017 IncrementalHoareTripleChecker+Valid, 5747 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:39:22,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8390 Valid, 9507 Invalid, 10767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5017 Valid, 5747 Invalid, 3 Unknown, 0 Unchecked, 26.7s Time] [2023-11-06 22:39:22,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6580 states. [2023-11-06 22:39:22,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6580 to 4745. [2023-11-06 22:39:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4745 states, 3236 states have (on average 1.30778739184178) internal successors, (4232), 3328 states have internal predecessors, (4232), 1253 states have call successors, (1253), 256 states have call predecessors, (1253), 255 states have return successors, (1241), 1218 states have call predecessors, (1241), 1241 states have call successors, (1241) [2023-11-06 22:39:22,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4745 states to 4745 states and 6726 transitions. [2023-11-06 22:39:22,722 INFO L78 Accepts]: Start accepts. Automaton has 4745 states and 6726 transitions. Word has length 86 [2023-11-06 22:39:22,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:39:22,724 INFO L495 AbstractCegarLoop]: Abstraction has 4745 states and 6726 transitions. [2023-11-06 22:39:22,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-06 22:39:22,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4745 states and 6726 transitions. [2023-11-06 22:39:22,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-06 22:39:22,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:39:22,729 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:39:22,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:39:22,730 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:39:22,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:22,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1917381598, now seen corresponding path program 1 times [2023-11-06 22:39:22,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:22,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925623503] [2023-11-06 22:39:22,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:22,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:23,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:39:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:23,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:39:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:23,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:39:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:23,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 22:39:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:23,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:39:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:23,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:39:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:23,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:39:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:23,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 22:39:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:23,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:39:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:23,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-06 22:39:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:23,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:39:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:23,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-06 22:39:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:23,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-06 22:39:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:23,814 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-06 22:39:23,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:23,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925623503] [2023-11-06 22:39:23,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925623503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:23,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:23,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:39:23,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553951241] [2023-11-06 22:39:23,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:23,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:39:23,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:23,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:39:23,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:39:23,820 INFO L87 Difference]: Start difference. First operand 4745 states and 6726 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-06 22:39:31,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:39:32,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:39:37,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:39:39,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:39:41,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:39:46,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:39:46,189 INFO L93 Difference]: Finished difference Result 6585 states and 9843 transitions. [2023-11-06 22:39:46,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:39:46,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 95 [2023-11-06 22:39:46,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:39:46,249 INFO L225 Difference]: With dead ends: 6585 [2023-11-06 22:39:46,249 INFO L226 Difference]: Without dead ends: 6581 [2023-11-06 22:39:46,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:39:46,256 INFO L413 NwaCegarLoop]: 2753 mSDtfsCounter, 6194 mSDsluCounter, 4435 mSDsCounter, 0 mSdLazyCounter, 4166 mSolverCounterSat, 3182 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6619 SdHoareTripleChecker+Valid, 7188 SdHoareTripleChecker+Invalid, 7351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3182 IncrementalHoareTripleChecker+Valid, 4166 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:39:46,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6619 Valid, 7188 Invalid, 7351 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3182 Valid, 4166 Invalid, 3 Unknown, 0 Unchecked, 21.8s Time] [2023-11-06 22:39:46,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6581 states. [2023-11-06 22:39:46,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6581 to 4767. [2023-11-06 22:39:46,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4767 states, 3252 states have (on average 1.305350553505535) internal successors, (4245), 3342 states have internal predecessors, (4245), 1251 states have call successors, (1251), 264 states have call predecessors, (1251), 263 states have return successors, (1241), 1218 states have call predecessors, (1241), 1241 states have call successors, (1241) [2023-11-06 22:39:46,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4767 states to 4767 states and 6737 transitions. [2023-11-06 22:39:46,897 INFO L78 Accepts]: Start accepts. Automaton has 4767 states and 6737 transitions. Word has length 95 [2023-11-06 22:39:46,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:39:46,898 INFO L495 AbstractCegarLoop]: Abstraction has 4767 states and 6737 transitions. [2023-11-06 22:39:46,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-06 22:39:46,899 INFO L276 IsEmpty]: Start isEmpty. Operand 4767 states and 6737 transitions. [2023-11-06 22:39:46,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-06 22:39:46,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:39:46,909 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:39:46,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:39:46,910 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:39:46,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:46,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1277332213, now seen corresponding path program 1 times [2023-11-06 22:39:46,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:46,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675951432] [2023-11-06 22:39:46,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:46,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:39:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:39:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:39:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 22:39:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:39:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:39:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:39:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 22:39:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:39:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-06 22:39:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:39:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 22:39:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:39:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 22:39:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-06 22:39:47,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:47,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675951432] [2023-11-06 22:39:47,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675951432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:47,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:47,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:39:47,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878148929] [2023-11-06 22:39:47,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:47,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:39:47,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:47,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:39:47,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:39:47,710 INFO L87 Difference]: Start difference. First operand 4767 states and 6737 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:40:00,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:40:02,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:40:04,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:40:06,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:40:12,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:12,637 INFO L93 Difference]: Finished difference Result 7613 states and 11597 transitions. [2023-11-06 22:40:12,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:40:12,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2023-11-06 22:40:12,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:12,701 INFO L225 Difference]: With dead ends: 7613 [2023-11-06 22:40:12,701 INFO L226 Difference]: Without dead ends: 7609 [2023-11-06 22:40:12,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:40:12,708 INFO L413 NwaCegarLoop]: 2624 mSDtfsCounter, 8324 mSDsluCounter, 4689 mSDsCounter, 0 mSdLazyCounter, 4946 mSolverCounterSat, 5527 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8781 SdHoareTripleChecker+Valid, 7313 SdHoareTripleChecker+Invalid, 10477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5527 IncrementalHoareTripleChecker+Valid, 4946 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:12,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8781 Valid, 7313 Invalid, 10477 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5527 Valid, 4946 Invalid, 4 Unknown, 0 Unchecked, 24.1s Time] [2023-11-06 22:40:12,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7609 states. [2023-11-06 22:40:13,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7609 to 4801. [2023-11-06 22:40:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4801 states, 3276 states have (on average 1.3021978021978022) internal successors, (4266), 3364 states have internal predecessors, (4266), 1249 states have call successors, (1249), 276 states have call predecessors, (1249), 275 states have return successors, (1241), 1218 states have call predecessors, (1241), 1241 states have call successors, (1241) [2023-11-06 22:40:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4801 states to 4801 states and 6756 transitions. [2023-11-06 22:40:13,299 INFO L78 Accepts]: Start accepts. Automaton has 4801 states and 6756 transitions. Word has length 98 [2023-11-06 22:40:13,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:13,301 INFO L495 AbstractCegarLoop]: Abstraction has 4801 states and 6756 transitions. [2023-11-06 22:40:13,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:40:13,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4801 states and 6756 transitions. [2023-11-06 22:40:13,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-06 22:40:13,305 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:13,306 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:40:13,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:40:13,306 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:13,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:13,307 INFO L85 PathProgramCache]: Analyzing trace with hash -943818277, now seen corresponding path program 1 times [2023-11-06 22:40:13,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:13,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300360143] [2023-11-06 22:40:13,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:13,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:13,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:40:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:13,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:40:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:40:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:13,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 22:40:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:13,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:40:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:13,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:40:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:13,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:40:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:13,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 22:40:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:13,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:40:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:13,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-06 22:40:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:13,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:40:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:14,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 22:40:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:14,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:40:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:14,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 22:40:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-06 22:40:14,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:14,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300360143] [2023-11-06 22:40:14,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300360143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:14,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:14,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:40:14,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748524695] [2023-11-06 22:40:14,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:14,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:40:14,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:14,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:40:14,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:40:14,087 INFO L87 Difference]: Start difference. First operand 4801 states and 6756 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:40:25,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:40:27,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:40:29,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:40:31,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:40:35,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:35,455 INFO L93 Difference]: Finished difference Result 7609 states and 11591 transitions. [2023-11-06 22:40:35,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:40:35,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2023-11-06 22:40:35,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:35,503 INFO L225 Difference]: With dead ends: 7609 [2023-11-06 22:40:35,503 INFO L226 Difference]: Without dead ends: 7606 [2023-11-06 22:40:35,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:40:35,507 INFO L413 NwaCegarLoop]: 2576 mSDtfsCounter, 8803 mSDsluCounter, 3216 mSDsCounter, 0 mSdLazyCounter, 3572 mSolverCounterSat, 5714 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9263 SdHoareTripleChecker+Valid, 5792 SdHoareTripleChecker+Invalid, 9290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5714 IncrementalHoareTripleChecker+Valid, 3572 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:35,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9263 Valid, 5792 Invalid, 9290 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5714 Valid, 3572 Invalid, 4 Unknown, 0 Unchecked, 20.5s Time] [2023-11-06 22:40:35,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2023-11-06 22:40:36,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 4800. [2023-11-06 22:40:36,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4800 states, 3276 states have (on average 1.301892551892552) internal successors, (4265), 3363 states have internal predecessors, (4265), 1248 states have call successors, (1248), 276 states have call predecessors, (1248), 275 states have return successors, (1241), 1218 states have call predecessors, (1241), 1241 states have call successors, (1241) [2023-11-06 22:40:36,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4800 states to 4800 states and 6754 transitions. [2023-11-06 22:40:36,108 INFO L78 Accepts]: Start accepts. Automaton has 4800 states and 6754 transitions. Word has length 99 [2023-11-06 22:40:36,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:36,109 INFO L495 AbstractCegarLoop]: Abstraction has 4800 states and 6754 transitions. [2023-11-06 22:40:36,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:40:36,110 INFO L276 IsEmpty]: Start isEmpty. Operand 4800 states and 6754 transitions. [2023-11-06 22:40:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-06 22:40:36,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:36,114 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2023-11-06 22:40:36,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:40:36,114 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:36,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:36,115 INFO L85 PathProgramCache]: Analyzing trace with hash 805184014, now seen corresponding path program 1 times [2023-11-06 22:40:36,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:36,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370128060] [2023-11-06 22:40:36,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:36,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:36,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:40:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:36,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:40:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:36,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:40:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:36,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 22:40:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:36,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:40:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:36,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:40:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:36,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:40:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:36,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 22:40:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:36,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:40:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:36,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-06 22:40:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:36,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:40:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:36,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 22:40:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:36,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:40:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:36,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 22:40:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:36,739 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-06 22:40:36,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:36,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370128060] [2023-11-06 22:40:36,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370128060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:36,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:36,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:40:36,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456511783] [2023-11-06 22:40:36,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:36,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:40:36,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:36,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:40:36,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:40:36,742 INFO L87 Difference]: Start difference. First operand 4800 states and 6754 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:40:48,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:40:50,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:40:52,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:40:54,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:41:00,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:00,690 INFO L93 Difference]: Finished difference Result 7608 states and 11589 transitions. [2023-11-06 22:41:00,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:41:00,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 100 [2023-11-06 22:41:00,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:00,732 INFO L225 Difference]: With dead ends: 7608 [2023-11-06 22:41:00,733 INFO L226 Difference]: Without dead ends: 7605 [2023-11-06 22:41:00,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:41:00,739 INFO L413 NwaCegarLoop]: 2610 mSDtfsCounter, 8305 mSDsluCounter, 4704 mSDsCounter, 0 mSdLazyCounter, 4858 mSolverCounterSat, 5537 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8759 SdHoareTripleChecker+Valid, 7314 SdHoareTripleChecker+Invalid, 10399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5537 IncrementalHoareTripleChecker+Valid, 4858 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:00,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8759 Valid, 7314 Invalid, 10399 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5537 Valid, 4858 Invalid, 4 Unknown, 0 Unchecked, 23.0s Time] [2023-11-06 22:41:00,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7605 states. [2023-11-06 22:41:01,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7605 to 4799. [2023-11-06 22:41:01,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4799 states, 3276 states have (on average 1.3015873015873016) internal successors, (4264), 3362 states have internal predecessors, (4264), 1247 states have call successors, (1247), 276 states have call predecessors, (1247), 275 states have return successors, (1241), 1218 states have call predecessors, (1241), 1241 states have call successors, (1241) [2023-11-06 22:41:01,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4799 states to 4799 states and 6752 transitions. [2023-11-06 22:41:01,450 INFO L78 Accepts]: Start accepts. Automaton has 4799 states and 6752 transitions. Word has length 100 [2023-11-06 22:41:01,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:01,451 INFO L495 AbstractCegarLoop]: Abstraction has 4799 states and 6752 transitions. [2023-11-06 22:41:01,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:41:01,451 INFO L276 IsEmpty]: Start isEmpty. Operand 4799 states and 6752 transitions. [2023-11-06 22:41:01,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-06 22:41:01,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:01,456 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2023-11-06 22:41:01,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:41:01,456 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:01,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:01,457 INFO L85 PathProgramCache]: Analyzing trace with hash -810314946, now seen corresponding path program 1 times [2023-11-06 22:41:01,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:01,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949805695] [2023-11-06 22:41:01,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:01,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:01,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:41:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:01,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:41:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:01,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:41:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:01,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 22:41:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:01,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:41:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:01,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:41:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:01,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:41:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:01,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 22:41:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:01,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:41:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:01,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-06 22:41:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:02,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:41:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 22:41:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:41:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:02,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 22:41:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:02,179 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-06 22:41:02,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:02,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949805695] [2023-11-06 22:41:02,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949805695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:02,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:02,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:41:02,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32801505] [2023-11-06 22:41:02,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:02,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:41:02,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:02,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:41:02,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:41:02,183 INFO L87 Difference]: Start difference. First operand 4799 states and 6752 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:41:12,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:41:14,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:41:16,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:41:18,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:41:23,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:23,637 INFO L93 Difference]: Finished difference Result 7607 states and 11587 transitions. [2023-11-06 22:41:23,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:41:23,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2023-11-06 22:41:23,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:23,685 INFO L225 Difference]: With dead ends: 7607 [2023-11-06 22:41:23,685 INFO L226 Difference]: Without dead ends: 7604 [2023-11-06 22:41:23,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:41:23,692 INFO L413 NwaCegarLoop]: 2605 mSDtfsCounter, 8842 mSDsluCounter, 3145 mSDsCounter, 0 mSdLazyCounter, 3589 mSolverCounterSat, 5733 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9295 SdHoareTripleChecker+Valid, 5750 SdHoareTripleChecker+Invalid, 9326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5733 IncrementalHoareTripleChecker+Valid, 3589 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:23,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9295 Valid, 5750 Invalid, 9326 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5733 Valid, 3589 Invalid, 4 Unknown, 0 Unchecked, 20.4s Time] [2023-11-06 22:41:23,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7604 states. [2023-11-06 22:41:24,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7604 to 4798. [2023-11-06 22:41:24,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 3276 states have (on average 1.3012820512820513) internal successors, (4263), 3361 states have internal predecessors, (4263), 1246 states have call successors, (1246), 276 states have call predecessors, (1246), 275 states have return successors, (1241), 1218 states have call predecessors, (1241), 1241 states have call successors, (1241) [2023-11-06 22:41:24,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 6750 transitions. [2023-11-06 22:41:24,491 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 6750 transitions. Word has length 101 [2023-11-06 22:41:24,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:24,492 INFO L495 AbstractCegarLoop]: Abstraction has 4798 states and 6750 transitions. [2023-11-06 22:41:24,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:41:24,492 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 6750 transitions. [2023-11-06 22:41:24,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-06 22:41:24,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:24,497 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:24,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:41:24,497 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:24,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:24,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1009897521, now seen corresponding path program 1 times [2023-11-06 22:41:24,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:24,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729842306] [2023-11-06 22:41:24,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:24,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:24,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:41:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:24,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:41:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:24,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:41:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:24,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 22:41:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:24,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:41:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:25,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:41:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:25,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:41:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:25,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 22:41:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:25,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:41:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:25,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-06 22:41:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:25,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:41:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:25,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-06 22:41:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:25,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-06 22:41:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:25,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:41:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:25,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:41:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-06 22:41:25,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:25,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729842306] [2023-11-06 22:41:25,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729842306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:25,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:25,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:41:25,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660474272] [2023-11-06 22:41:25,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:25,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:41:25,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:25,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:41:25,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:41:25,221 INFO L87 Difference]: Start difference. First operand 4798 states and 6750 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:41:38,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:41:40,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:41:42,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []