./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 44610cb4431513b4b9429bb48b9c496068c0f3a3836e87f731a95bf3b77832c9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:15:45,348 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:15:45,417 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 19:15:45,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:15:45,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:15:45,446 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:15:45,447 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:15:45,447 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:15:45,448 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:15:45,449 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:15:45,449 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:15:45,450 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:15:45,450 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:15:45,451 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:15:45,451 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:15:45,452 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:15:45,452 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:15:45,453 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:15:45,453 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:15:45,454 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:15:45,454 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:15:45,455 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:15:45,456 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:15:45,456 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:15:45,457 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:15:45,457 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:15:45,458 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:15:45,458 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:15:45,459 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:15:45,459 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:15:45,459 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:15:45,460 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:15:45,460 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:15:45,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:15:45,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:15:45,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:15:45,461 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:15:45,462 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:15:45,462 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:15:45,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:15:45,462 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:15:45,463 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:15:45,463 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:15:45,463 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:15:45,463 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44610cb4431513b4b9429bb48b9c496068c0f3a3836e87f731a95bf3b77832c9 [2023-12-02 19:15:45,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:15:45,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:15:45,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:15:45,705 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:15:45,706 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:15:45,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i [2023-12-02 19:15:48,462 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:15:48,996 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:15:48,997 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i [2023-12-02 19:15:49,044 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/data/bb108774b/0f1b71313e154cbc9713160c6a51147c/FLAG657c4245f [2023-12-02 19:15:49,057 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/data/bb108774b/0f1b71313e154cbc9713160c6a51147c [2023-12-02 19:15:49,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:15:49,060 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:15:49,061 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:15:49,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:15:49,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:15:49,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:15:49" (1/1) ... [2023-12-02 19:15:49,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c80d60d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:15:49, skipping insertion in model container [2023-12-02 19:15:49,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:15:49" (1/1) ... [2023-12-02 19:15:49,345 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:15:50,146 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_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i[193558,193571] [2023-12-02 19:15:53,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:15:53,978 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:15:54,125 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_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i[193558,193571] [2023-12-02 19:15:54,145 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/net/--X--defaultlinux-3.16-rc1.tar.xz--X--205_9a--X--cpachecker/linux-3.16-rc1.tar.xz/csd_deg_dscv/553/dscv_tempdir/dscv/ri/205_9a/drivers/net/wireless/zd1211rw/zd_chip.o.c.prepared"), "i" (152), "i" (12UL)); [7172-7173] [2023-12-02 19:15:54,147 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/net/--X--defaultlinux-3.16-rc1.tar.xz--X--205_9a--X--cpachecker/linux-3.16-rc1.tar.xz/csd_deg_dscv/553/dscv_tempdir/dscv/ri/205_9a/drivers/net/wireless/zd1211rw/zd_chip.o.c.prepared"), "i" (153), "i" (12UL)); [7180-7181] [2023-12-02 19:15:54,151 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/net/--X--defaultlinux-3.16-rc1.tar.xz--X--205_9a--X--cpachecker/linux-3.16-rc1.tar.xz/csd_deg_dscv/553/dscv_tempdir/dscv/ri/205_9a/drivers/net/wireless/zd1211rw/zd_chip.o.c.prepared"), "i" (195), "i" (12UL)); [7262-7263] [2023-12-02 19:15:54,247 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [9809] [2023-12-02 19:15:54,247 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [9816] [2023-12-02 19:15:54,249 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 *)"./arch/x86/include/asm/paravirt.h"), "i" (804), "i" (12UL)); [9861-9862] [2023-12-02 19:15:54,249 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (44UL), [paravirt_opptr] "i" (& pv_irq_ops.save_fl.func), [paravirt_clobber] "i" (1): "memory", "cc"); [9867-9869] [2023-12-02 19:15:54,294 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/net/--X--defaultlinux-3.16-rc1.tar.xz--X--205_9a--X--cpachecker/linux-3.16-rc1.tar.xz/csd_deg_dscv/553/dscv_tempdir/dscv/ri/205_9a/drivers/net/wireless/zd1211rw/zd_mac.o.c.prepared"), "i" (827), "i" (12UL)); [11339-11340] [2023-12-02 19:15:54,435 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [15060-15061] [2023-12-02 19:15:54,436 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "m" (__preempt_count)); [15083] [2023-12-02 19:15:54,436 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [15086] [2023-12-02 19:15:54,437 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [15089] [2023-12-02 19:15:54,437 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [15092] [2023-12-02 19:15:54,524 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/net/--X--defaultlinux-3.16-rc1.tar.xz--X--205_9a--X--cpachecker/linux-3.16-rc1.tar.xz/csd_deg_dscv/553/dscv_tempdir/dscv/ri/205_9a/drivers/net/wireless/zd1211rw/zd_usb.o.c.prepared"), "i" (1776), "i" (12UL)); [17786-17787] [2023-12-02 19:15:54,573 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/net/--X--defaultlinux-3.16-rc1.tar.xz--X--205_9a--X--cpachecker/linux-3.16-rc1.tar.xz/csd_deg_dscv/553/dscv_tempdir/dscv/ri/205_9a/drivers/net/wireless/zd1211rw/zd_usb.o.c.prepared"), "i" (2059), "i" (12UL)); [18297-18298] [2023-12-02 19:15:54,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:15:54,754 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:15:54,754 WARN L675 CHandler]: The function __VERIFIER_nondet_u32 is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:15:54,754 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:15:54,762 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:15:54,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:15:54 WrapperNode [2023-12-02 19:15:54,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:15:54,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:15:54,764 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:15:54,764 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:15:54,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:15:54" (1/1) ... [2023-12-02 19:15:54,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:15:54" (1/1) ... [2023-12-02 19:15:55,329 INFO L138 Inliner]: procedures = 537, calls = 8663, calls flagged for inlining = 242, calls inlined = 239, statements flattened = 16144 [2023-12-02 19:15:55,330 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:15:55,331 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:15:55,332 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:15:55,332 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:15:55,346 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:15:54" (1/1) ... [2023-12-02 19:15:55,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:15:54" (1/1) ... [2023-12-02 19:15:55,465 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:15:54" (1/1) ... [2023-12-02 19:15:55,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:15:54" (1/1) ... [2023-12-02 19:15:55,813 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:15:54" (1/1) ... [2023-12-02 19:15:55,940 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:15:54" (1/1) ... [2023-12-02 19:15:56,005 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:15:54" (1/1) ... [2023-12-02 19:15:56,034 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:15:54" (1/1) ... [2023-12-02 19:15:56,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:15:56,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:15:56,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:15:56,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:15:56,111 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:15:54" (1/1) ... [2023-12-02 19:15:56,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:15:56,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:15:56,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:15:56,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:15:56,171 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-12-02 19:15:56,171 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-12-02 19:15:56,171 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-12-02 19:15:56,172 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-12-02 19:15:56,172 INFO L130 BoogieDeclarations]: Found specification of procedure zd_ioread32_locked [2023-12-02 19:15:56,172 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_ioread32_locked [2023-12-02 19:15:56,172 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_tx_info_clear_status [2023-12-02 19:15:56,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_tx_info_clear_status [2023-12-02 19:15:56,173 INFO L130 BoogieDeclarations]: Found specification of procedure zd_check_signal [2023-12-02 19:15:56,173 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_check_signal [2023-12-02 19:15:56,173 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2023-12-02 19:15:56,173 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2023-12-02 19:15:56,173 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2023-12-02 19:15:56,174 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2023-12-02 19:15:56,174 INFO L130 BoogieDeclarations]: Found specification of procedure post_reset [2023-12-02 19:15:56,174 INFO L138 BoogieDeclarations]: Found implementation of procedure post_reset [2023-12-02 19:15:56,174 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_init_hw [2023-12-02 19:15:56,174 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_init_hw [2023-12-02 19:15:56,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 19:15:56,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 19:15:56,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2023-12-02 19:15:56,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2023-12-02 19:15:56,175 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2023-12-02 19:15:56,175 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2023-12-02 19:15:56,175 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_to_usbdev [2023-12-02 19:15:56,176 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_to_usbdev [2023-12-02 19:15:56,176 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_rx [2023-12-02 19:15:56,176 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_rx [2023-12-02 19:15:56,176 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_set_channel [2023-12-02 19:15:56,176 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_set_channel [2023-12-02 19:15:56,176 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_clear [2023-12-02 19:15:56,176 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_clear [2023-12-02 19:15:56,176 INFO L130 BoogieDeclarations]: Found specification of procedure zd_switch_radio_off [2023-12-02 19:15:56,176 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_switch_radio_off [2023-12-02 19:15:56,177 INFO L130 BoogieDeclarations]: Found specification of procedure free_rx_urb [2023-12-02 19:15:56,177 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rx_urb [2023-12-02 19:15:56,177 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_configure_filter [2023-12-02 19:15:56,177 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_configure_filter [2023-12-02 19:15:56,177 INFO L130 BoogieDeclarations]: Found specification of procedure usb_queue_reset_device [2023-12-02 19:15:56,177 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_queue_reset_device [2023-12-02 19:15:56,177 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 19:15:56,178 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 19:15:56,178 INFO L130 BoogieDeclarations]: Found specification of procedure fw_reg_addr [2023-12-02 19:15:56,178 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_reg_addr [2023-12-02 19:15:56,178 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_beacon_get [2023-12-02 19:15:56,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_beacon_get [2023-12-02 19:15:56,178 INFO L130 BoogieDeclarations]: Found specification of procedure zd_switch_radio_on [2023-12-02 19:15:56,179 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_switch_radio_on [2023-12-02 19:15:56,179 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 19:15:56,179 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_config [2023-12-02 19:15:56,179 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_config [2023-12-02 19:15:56,179 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-12-02 19:15:56,180 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-12-02 19:15:56,180 INFO L130 BoogieDeclarations]: Found specification of procedure uw2453_init_mode [2023-12-02 19:15:56,180 INFO L138 BoogieDeclarations]: Found implementation of procedure uw2453_init_mode [2023-12-02 19:15:56,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2023-12-02 19:15:56,180 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2023-12-02 19:15:56,180 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2023-12-02 19:15:56,180 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_enable_hwint [2023-12-02 19:15:56,180 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_enable_hwint [2023-12-02 19:15:56,181 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 19:15:56,181 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 19:15:56,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:15:56,181 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_lock_phy_regs [2023-12-02 19:15:56,181 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_lock_phy_regs [2023-12-02 19:15:56,181 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 19:15:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 19:15:56,182 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rf_to_chip [2023-12-02 19:15:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rf_to_chip [2023-12-02 19:15:56,182 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_free_cur_beacon_locked [2023-12-02 19:15:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_free_cur_beacon_locked [2023-12-02 19:15:56,182 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_is_first [2023-12-02 19:15:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_is_first [2023-12-02 19:15:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_iowrite16v_async [2023-12-02 19:15:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_iowrite16v_async [2023-12-02 19:15:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2023-12-02 19:15:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2023-12-02 19:15:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-12-02 19:15:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-12-02 19:15:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rfwrite_locked [2023-12-02 19:15:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rfwrite_locked [2023-12-02 19:15:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2023-12-02 19:15:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2023-12-02 19:15:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 19:15:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-12-02 19:15:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-12-02 19:15:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 19:15:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_is_locked [2023-12-02 19:15:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_is_locked [2023-12-02 19:15:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_free_cur_beacon [2023-12-02 19:15:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_free_cur_beacon [2023-12-02 19:15:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-12-02 19:15:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-12-02 19:15:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_remove_interface [2023-12-02 19:15:56,186 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_remove_interface [2023-12-02 19:15:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:15:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure check_read_regs [2023-12-02 19:15:56,186 INFO L138 BoogieDeclarations]: Found implementation of procedure check_read_regs [2023-12-02 19:15:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rf_clear [2023-12-02 19:15:56,186 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rf_clear [2023-12-02 19:15:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx_packet [2023-12-02 19:15:56,187 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx_packet [2023-12-02 19:15:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_stop [2023-12-02 19:15:56,187 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_stop [2023-12-02 19:15:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure zd_iowrite32a_locked [2023-12-02 19:15:56,187 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_iowrite32a_locked [2023-12-02 19:15:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure zd1211b_al7230b_finalize [2023-12-02 19:15:56,188 INFO L138 BoogieDeclarations]: Found implementation of procedure zd1211b_al7230b_finalize [2023-12-02 19:15:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 19:15:56,188 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 19:15:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___skb_dequeue_24 [2023-12-02 19:15:56,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___skb_dequeue_24 [2023-12-02 19:15:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure zd_iowrite16_locked [2023-12-02 19:15:56,188 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_iowrite16_locked [2023-12-02 19:15:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-12-02 19:15:56,188 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-12-02 19:15:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure test_init [2023-12-02 19:15:56,189 INFO L138 BoogieDeclarations]: Found implementation of procedure test_init [2023-12-02 19:15:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2023-12-02 19:15:56,189 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2023-12-02 19:15:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure request_fw_file [2023-12-02 19:15:56,189 INFO L138 BoogieDeclarations]: Found implementation of procedure request_fw_file [2023-12-02 19:15:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure dump_cr [2023-12-02 19:15:56,189 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_cr [2023-12-02 19:15:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure usb_pipe_endpoint [2023-12-02 19:15:56,190 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_pipe_endpoint [2023-12-02 19:15:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-12-02 19:15:56,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-12-02 19:15:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mc_clear [2023-12-02 19:15:56,190 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mc_clear [2023-12-02 19:15:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 19:15:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure zd_write_mac_addr_common [2023-12-02 19:15:56,191 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_write_mac_addr_common [2023-12-02 19:15:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_prepare_multicast [2023-12-02 19:15:56,191 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_prepare_multicast [2023-12-02 19:15:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2023-12-02 19:15:56,192 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2023-12-02 19:15:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_disable_tx [2023-12-02 19:15:56,192 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_disable_tx [2023-12-02 19:15:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_to_hw [2023-12-02 19:15:56,193 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_to_hw [2023-12-02 19:15:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:15:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2023-12-02 19:15:56,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2023-12-02 19:15:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_ioread16 [2023-12-02 19:15:56,193 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_ioread16 [2023-12-02 19:15:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 19:15:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_resume [2023-12-02 19:15:56,194 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_resume [2023-12-02 19:15:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-12-02 19:15:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 19:15:56,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 19:15:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-12-02 19:15:56,194 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-12-02 19:15:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure zd_ioread32v_locked [2023-12-02 19:15:56,195 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_ioread32v_locked [2023-12-02 19:15:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure get_fw_name [2023-12-02 19:15:56,195 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fw_name [2023-12-02 19:15:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-12-02 19:15:56,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-12-02 19:15:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_is_zd1211b [2023-12-02 19:15:56,195 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_is_zd1211b [2023-12-02 19:15:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-12-02 19:15:56,196 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-12-02 19:15:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure set_beacon_interval [2023-12-02 19:15:56,196 INFO L138 BoogieDeclarations]: Found implementation of procedure set_beacon_interval [2023-12-02 19:15:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_filter [2023-12-02 19:15:56,196 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_filter [2023-12-02 19:15:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure uw2453_synth_set_channel [2023-12-02 19:15:56,196 INFO L138 BoogieDeclarations]: Found implementation of procedure uw2453_synth_set_channel [2023-12-02 19:15:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-12-02 19:15:56,196 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-12-02 19:15:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_iowrite16v_async_start [2023-12-02 19:15:56,197 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_iowrite16v_async_start [2023-12-02 19:15:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_disable_rx [2023-12-02 19:15:56,197 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_disable_rx [2023-12-02 19:15:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure zd1211b_al2230_finalize_rf [2023-12-02 19:15:56,197 INFO L138 BoogieDeclarations]: Found implementation of procedure zd1211b_al2230_finalize_rf [2023-12-02 19:15:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure zd_iowrite32_locked [2023-12-02 19:15:56,197 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_iowrite32_locked [2023-12-02 19:15:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure handle_regs_int_override [2023-12-02 19:15:56,198 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_regs_int_override [2023-12-02 19:15:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_set_multicast_hash [2023-12-02 19:15:56,198 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_set_multicast_hash [2023-12-02 19:15:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2023-12-02 19:15:56,198 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2023-12-02 19:15:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-12-02 19:15:56,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-12-02 19:15:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure disable_hwint [2023-12-02 19:15:56,198 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_hwint [2023-12-02 19:15:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-12-02 19:15:56,199 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-12-02 19:15:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_tx_status [2023-12-02 19:15:56,199 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_tx_status [2023-12-02 19:15:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_disable_rxtx [2023-12-02 19:15:56,199 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_disable_rxtx [2023-12-02 19:15:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2023-12-02 19:15:56,199 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2023-12-02 19:15:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_unlock_phy_regs [2023-12-02 19:15:56,199 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_unlock_phy_regs [2023-12-02 19:15:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-12-02 19:15:56,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-12-02 19:15:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-12-02 19:15:56,200 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-12-02 19:15:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-12-02 19:15:56,200 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-12-02 19:15:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rf_name [2023-12-02 19:15:56,200 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rf_name [2023-12-02 19:15:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-12-02 19:15:56,201 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-12-02 19:15:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2023-12-02 19:15:56,201 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2023-12-02 19:15:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_clear [2023-12-02 19:15:56,201 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_clear [2023-12-02 19:15:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rfwritev_locked [2023-12-02 19:15:56,201 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rfwritev_locked [2023-12-02 19:15:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:15:56,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:15:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_wake_queues [2023-12-02 19:15:56,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_wake_queues [2023-12-02 19:15:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_control_leds [2023-12-02 19:15:56,202 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_control_leds [2023-12-02 19:15:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-12-02 19:15:56,202 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-12-02 19:15:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-12-02 19:15:56,203 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-12-02 19:15:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure scnprint_id___0 [2023-12-02 19:15:56,203 INFO L138 BoogieDeclarations]: Found implementation of procedure scnprint_id___0 [2023-12-02 19:15:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_is_pspoll [2023-12-02 19:15:56,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_is_pspoll [2023-12-02 19:15:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_iowrite16v_async_end [2023-12-02 19:15:56,203 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_iowrite16v_async_end [2023-12-02 19:15:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 19:15:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 19:15:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure upload_code [2023-12-02 19:15:56,204 INFO L138 BoogieDeclarations]: Found implementation of procedure upload_code [2023-12-02 19:15:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 19:15:56,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 19:15:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2023-12-02 19:15:56,204 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2023-12-02 19:15:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rfwrite_cr_locked [2023-12-02 19:15:56,204 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rfwrite_cr_locked [2023-12-02 19:15:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~TO~int [2023-12-02 19:15:56,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~TO~int [2023-12-02 19:15:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2023-12-02 19:15:56,205 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2023-12-02 19:15:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure set_rts_cts [2023-12-02 19:15:56,205 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rts_cts [2023-12-02 19:15:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_to_mac [2023-12-02 19:15:56,205 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_to_mac [2023-12-02 19:15:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure __zd_usb_disable_rx [2023-12-02 19:15:56,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __zd_usb_disable_rx [2023-12-02 19:15:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure zd_submit_waiting_urb [2023-12-02 19:15:56,206 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_submit_waiting_urb [2023-12-02 19:15:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_stop [2023-12-02 19:15:56,206 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_stop [2023-12-02 19:15:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2023-12-02 19:15:56,206 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2023-12-02 19:15:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_tx_status_irqsafe [2023-12-02 19:15:56,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_tx_status_irqsafe [2023-12-02 19:15:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_reset_rx_idle_timer [2023-12-02 19:15:56,207 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_reset_rx_idle_timer [2023-12-02 19:15:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 19:15:56,207 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 19:15:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-12-02 19:15:56,207 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-12-02 19:15:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 19:15:56,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 19:15:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure zd_set_beacon_interval [2023-12-02 19:15:56,208 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_set_beacon_interval [2023-12-02 19:15:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-12-02 19:15:56,208 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-12-02 19:15:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 19:15:56,208 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 19:15:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure get_bcdDevice [2023-12-02 19:15:56,208 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bcdDevice [2023-12-02 19:15:56,209 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_disable_int [2023-12-02 19:15:56,209 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_disable_int [2023-12-02 19:15:56,209 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 19:15:56,209 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 19:15:56,209 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2023-12-02 19:15:56,209 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2023-12-02 19:15:56,209 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-12-02 19:15:56,209 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-12-02 19:15:56,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:15:56,210 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 19:15:56,210 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 19:15:56,210 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rf_init_hw [2023-12-02 19:15:56,210 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rf_init_hw [2023-12-02 19:15:56,210 INFO L130 BoogieDeclarations]: Found specification of procedure __zd_usb_enable_rx [2023-12-02 19:15:56,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __zd_usb_enable_rx [2023-12-02 19:15:56,211 INFO L130 BoogieDeclarations]: Found specification of procedure usb_int_regs_length [2023-12-02 19:15:56,211 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_int_regs_length [2023-12-02 19:15:56,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 19:15:56,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2023-12-02 19:15:56,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2023-12-02 19:15:56,211 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2023-12-02 19:15:56,211 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2023-12-02 19:15:56,211 INFO L130 BoogieDeclarations]: Found specification of procedure zd_iowrite32 [2023-12-02 19:15:56,212 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_iowrite32 [2023-12-02 19:15:56,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 19:15:56,212 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_config_beacon [2023-12-02 19:15:56,212 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_config_beacon [2023-12-02 19:15:56,212 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 19:15:56,212 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 19:15:56,212 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-12-02 19:15:56,212 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-12-02 19:15:56,213 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-12-02 19:15:56,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-12-02 19:15:56,213 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-12-02 19:15:56,213 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-12-02 19:15:56,213 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-12-02 19:15:56,213 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-12-02 19:15:56,213 INFO L130 BoogieDeclarations]: Found specification of procedure zd_hw_mac [2023-12-02 19:15:56,214 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_hw_mac [2023-12-02 19:15:56,214 INFO L130 BoogieDeclarations]: Found specification of procedure read_values [2023-12-02 19:15:56,214 INFO L138 BoogieDeclarations]: Found implementation of procedure read_values [2023-12-02 19:15:56,214 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-12-02 19:15:56,214 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-12-02 19:15:56,214 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-12-02 19:15:56,214 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-12-02 19:15:56,214 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2023-12-02 19:15:56,215 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2023-12-02 19:15:56,215 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_start [2023-12-02 19:15:56,215 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_start [2023-12-02 19:15:56,215 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2023-12-02 19:15:56,215 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2023-12-02 19:15:56,215 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-12-02 19:15:56,215 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-12-02 19:15:56,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-12-02 19:15:56,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-12-02 19:15:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect [2023-12-02 19:15:56,216 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect [2023-12-02 19:15:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure zd_intf_to_hw [2023-12-02 19:15:56,216 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_intf_to_hw [2023-12-02 19:15:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure inc_addr [2023-12-02 19:15:56,216 INFO L138 BoogieDeclarations]: Found implementation of procedure inc_addr [2023-12-02 19:15:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2023-12-02 19:15:56,217 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2023-12-02 19:15:56,217 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_to_mac [2023-12-02 19:15:56,217 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_to_mac [2023-12-02 19:15:56,217 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rfwritev_cr_locked [2023-12-02 19:15:56,217 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rfwritev_cr_locked [2023-12-02 19:15:56,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2023-12-02 19:15:56,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2023-12-02 19:15:56,217 INFO L130 BoogieDeclarations]: Found specification of procedure pre_reset [2023-12-02 19:15:56,218 INFO L138 BoogieDeclarations]: Found implementation of procedure pre_reset [2023-12-02 19:15:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-12-02 19:15:56,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-12-02 19:15:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 19:15:56,218 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 19:15:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_switch_radio_on [2023-12-02 19:15:56,218 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_switch_radio_on [2023-12-02 19:15:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-12-02 19:15:56,218 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-12-02 19:15:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 19:15:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 19:15:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2023-12-02 19:15:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2023-12-02 19:15:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure uw2453_write_vco_cfg [2023-12-02 19:15:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure uw2453_write_vco_cfg [2023-12-02 19:15:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:15:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_switch_radio_off [2023-12-02 19:15:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_switch_radio_off [2023-12-02 19:15:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-12-02 19:15:56,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-12-02 19:15:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure zd_ep_regs_out_msg [2023-12-02 19:15:56,220 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_ep_regs_out_msg [2023-12-02 19:15:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-12-02 19:15:56,220 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-12-02 19:15:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 19:15:56,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 19:15:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_to_chip [2023-12-02 19:15:56,220 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_to_chip [2023-12-02 19:15:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_disable_hwint [2023-12-02 19:15:56,221 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_disable_hwint [2023-12-02 19:15:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_ioread16v [2023-12-02 19:15:56,221 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_ioread16v [2023-12-02 19:15:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_init_hw [2023-12-02 19:15:56,221 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_init_hw [2023-12-02 19:15:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure zd_ioread16_locked [2023-12-02 19:15:56,221 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_ioread16_locked [2023-12-02 19:15:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_init_hw [2023-12-02 19:15:56,221 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_init_hw [2023-12-02 19:15:56,222 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_bss_info_changed [2023-12-02 19:15:56,222 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_bss_info_changed [2023-12-02 19:15:56,222 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_RXCB [2023-12-02 19:15:56,222 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_RXCB [2023-12-02 19:15:56,222 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2023-12-02 19:15:56,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2023-12-02 19:15:56,222 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2023-12-02 19:15:56,222 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2023-12-02 19:15:56,223 INFO L130 BoogieDeclarations]: Found specification of procedure scnprintf [2023-12-02 19:15:56,223 INFO L138 BoogieDeclarations]: Found implementation of procedure scnprintf [2023-12-02 19:15:56,223 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_get_tsf [2023-12-02 19:15:56,223 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_get_tsf [2023-12-02 19:15:56,223 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_disable_int [2023-12-02 19:15:56,223 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_disable_int [2023-12-02 19:15:56,223 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2023-12-02 19:15:56,224 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2023-12-02 19:15:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2023-12-02 19:15:56,224 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2023-12-02 19:15:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure zd_ioread16v_locked [2023-12-02 19:15:56,224 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_ioread16v_locked [2023-12-02 19:15:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-12-02 19:15:56,224 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-12-02 19:15:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_enable_int [2023-12-02 19:15:56,225 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_enable_int [2023-12-02 19:15:56,225 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2023-12-02 19:15:56,225 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2023-12-02 19:15:56,225 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-12-02 19:15:56,225 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-12-02 19:15:56,225 INFO L130 BoogieDeclarations]: Found specification of procedure _zd_iowrite32v_async_locked [2023-12-02 19:15:56,225 INFO L138 BoogieDeclarations]: Found implementation of procedure _zd_iowrite32v_async_locked [2023-12-02 19:15:56,225 INFO L130 BoogieDeclarations]: Found specification of procedure set_mac_and_bssid [2023-12-02 19:15:56,226 INFO L138 BoogieDeclarations]: Found implementation of procedure set_mac_and_bssid [2023-12-02 19:15:56,226 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_tx [2023-12-02 19:15:56,226 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_tx [2023-12-02 19:15:56,226 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_add_interface [2023-12-02 19:15:56,226 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_add_interface [2023-12-02 19:15:56,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:15:56,226 INFO L130 BoogieDeclarations]: Found specification of procedure zd_write_mac_addr [2023-12-02 19:15:56,227 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_write_mac_addr [2023-12-02 19:15:56,227 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2023-12-02 19:15:56,227 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2023-12-02 19:15:56,227 INFO L130 BoogieDeclarations]: Found specification of procedure zd_iowrite16a_locked [2023-12-02 19:15:56,227 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_iowrite16a_locked [2023-12-02 19:15:56,227 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2023-12-02 19:15:56,227 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2023-12-02 19:15:57,501 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:15:57,507 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:15:58,010 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 19:16:52,751 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:16:56,709 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:16:56,709 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-02 19:16:56,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:16:56 BoogieIcfgContainer [2023-12-02 19:16:56,713 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:16:56,716 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:16:56,716 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:16:56,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:16:56,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:15:49" (1/3) ... [2023-12-02 19:16:56,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fefd45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:16:56, skipping insertion in model container [2023-12-02 19:16:56,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:15:54" (2/3) ... [2023-12-02 19:16:56,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fefd45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:16:56, skipping insertion in model container [2023-12-02 19:16:56,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:16:56" (3/3) ... [2023-12-02 19:16:56,722 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i [2023-12-02 19:16:56,742 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:16:56,742 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:16:56,861 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:16:56,868 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@592820ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:16:56,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:16:56,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 3798 states, 2257 states have (on average 1.2950819672131149) internal successors, (2923), 2349 states have internal predecessors, (2923), 1335 states have call successors, (1335), 205 states have call predecessors, (1335), 204 states have return successors, (1331), 1326 states have call predecessors, (1331), 1331 states have call successors, (1331) [2023-12-02 19:16:56,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 19:16:56,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:56,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:56,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:16:56,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:56,906 INFO L85 PathProgramCache]: Analyzing trace with hash 626151743, now seen corresponding path program 1 times [2023-12-02 19:16:56,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:56,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395129832] [2023-12-02 19:16:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:56,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:58,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:58,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:58,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395129832] [2023-12-02 19:16:58,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395129832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:58,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:58,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:16:58,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74894821] [2023-12-02 19:16:58,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:58,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:16:58,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:58,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:16:58,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:16:58,395 INFO L87 Difference]: Start difference. First operand has 3798 states, 2257 states have (on average 1.2950819672131149) internal successors, (2923), 2349 states have internal predecessors, (2923), 1335 states have call successors, (1335), 205 states have call predecessors, (1335), 204 states have return successors, (1331), 1326 states have call predecessors, (1331), 1331 states have call successors, (1331) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:17:04,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:17:08,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:17:10,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:17:14,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:17:15,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:15,576 INFO L93 Difference]: Finished difference Result 11339 states and 16816 transitions. [2023-12-02 19:17:15,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:17:15,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2023-12-02 19:17:15,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:15,672 INFO L225 Difference]: With dead ends: 11339 [2023-12-02 19:17:15,672 INFO L226 Difference]: Without dead ends: 7518 [2023-12-02 19:17:15,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:17:15,711 INFO L413 NwaCegarLoop]: 5160 mSDtfsCounter, 5546 mSDsluCounter, 5111 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5546 SdHoareTripleChecker+Valid, 10271 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:15,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5546 Valid, 10271 Invalid, 875 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 863 Invalid, 3 Unknown, 0 Unchecked, 16.6s Time] [2023-12-02 19:17:15,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7518 states. [2023-12-02 19:17:16,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7518 to 7518. [2023-12-02 19:17:16,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7518 states, 4466 states have (on average 1.2890729959695477) internal successors, (5757), 4638 states have internal predecessors, (5757), 2646 states have call successors, (2646), 406 states have call predecessors, (2646), 405 states have return successors, (2645), 2635 states have call predecessors, (2645), 2645 states have call successors, (2645) [2023-12-02 19:17:16,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7518 states to 7518 states and 11048 transitions. [2023-12-02 19:17:16,338 INFO L78 Accepts]: Start accepts. Automaton has 7518 states and 11048 transitions. Word has length 27 [2023-12-02 19:17:16,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:16,338 INFO L495 AbstractCegarLoop]: Abstraction has 7518 states and 11048 transitions. [2023-12-02 19:17:16,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:17:16,339 INFO L276 IsEmpty]: Start isEmpty. Operand 7518 states and 11048 transitions. [2023-12-02 19:17:16,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 19:17:16,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:16,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:16,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:17:16,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:17:16,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:16,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1217524192, now seen corresponding path program 1 times [2023-12-02 19:17:16,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:16,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635518890] [2023-12-02 19:17:16,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:16,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:17,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:17,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635518890] [2023-12-02 19:17:17,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635518890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:17,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:17,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:17:17,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336341467] [2023-12-02 19:17:17,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:17,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:17,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:17,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:17,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:17,867 INFO L87 Difference]: Start difference. First operand 7518 states and 11048 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 19:17:24,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:17:26,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:17:30,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:17:32,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:17:34,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:17:41,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:41,873 INFO L93 Difference]: Finished difference Result 15033 states and 22216 transitions. [2023-12-02 19:17:41,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:41,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2023-12-02 19:17:41,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:41,983 INFO L225 Difference]: With dead ends: 15033 [2023-12-02 19:17:41,983 INFO L226 Difference]: Without dead ends: 15018 [2023-12-02 19:17:41,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:17:41,996 INFO L413 NwaCegarLoop]: 5313 mSDtfsCounter, 5533 mSDsluCounter, 10457 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5533 SdHoareTripleChecker+Valid, 15770 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:41,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5533 Valid, 15770 Invalid, 1328 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1323 Invalid, 4 Unknown, 0 Unchecked, 23.4s Time] [2023-12-02 19:17:42,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15018 states. [2023-12-02 19:17:42,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15018 to 15010. [2023-12-02 19:17:42,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15010 states, 8913 states have (on average 1.2890160439807024) internal successors, (11489), 9257 states have internal predecessors, (11489), 5287 states have call successors, (5287), 810 states have call predecessors, (5287), 809 states have return successors, (5410), 5266 states have call predecessors, (5410), 5286 states have call successors, (5410) [2023-12-02 19:17:43,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15010 states to 15010 states and 22186 transitions. [2023-12-02 19:17:43,067 INFO L78 Accepts]: Start accepts. Automaton has 15010 states and 22186 transitions. Word has length 38 [2023-12-02 19:17:43,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:43,068 INFO L495 AbstractCegarLoop]: Abstraction has 15010 states and 22186 transitions. [2023-12-02 19:17:43,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 19:17:43,069 INFO L276 IsEmpty]: Start isEmpty. Operand 15010 states and 22186 transitions. [2023-12-02 19:17:43,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-02 19:17:43,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:43,108 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:43,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:17:43,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:17:43,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:43,109 INFO L85 PathProgramCache]: Analyzing trace with hash 544358737, now seen corresponding path program 1 times [2023-12-02 19:17:43,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:43,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504839696] [2023-12-02 19:17:43,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:43,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:43,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:43,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504839696] [2023-12-02 19:17:43,698 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-02 19:17:43,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503261634] [2023-12-02 19:17:43,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:43,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:17:43,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:17:43,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:17:43,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:17:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:45,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 9368 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 19:17:45,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:17:46,529 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-02 19:17:46,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:17:46,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503261634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:46,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:46,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:46,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110822334] [2023-12-02 19:17:46,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:46,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:17:46,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:46,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:17:46,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:17:46,532 INFO L87 Difference]: Start difference. First operand 15010 states and 22186 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-02 19:17:52,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:17:54,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:17:56,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:18:03,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:18:06,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:18:06,825 INFO L93 Difference]: Finished difference Result 44454 states and 65715 transitions. [2023-12-02 19:18:06,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:18:06,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 160 [2023-12-02 19:18:06,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:18:07,001 INFO L225 Difference]: With dead ends: 44454 [2023-12-02 19:18:07,001 INFO L226 Difference]: Without dead ends: 29447 [2023-12-02 19:18:07,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:18:07,105 INFO L413 NwaCegarLoop]: 7919 mSDtfsCounter, 5294 mSDsluCounter, 5073 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5294 SdHoareTripleChecker+Valid, 12992 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:18:07,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5294 Valid, 12992 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1098 Invalid, 3 Unknown, 0 Unchecked, 19.4s Time] [2023-12-02 19:18:07,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29447 states. [2023-12-02 19:18:08,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29447 to 29436. [2023-12-02 19:18:08,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29436 states, 17503 states have (on average 1.287664971719134) internal successors, (22538), 18192 states have internal predecessors, (22538), 10343 states have call successors, (10343), 1590 states have call predecessors, (10343), 1589 states have return successors, (10570), 10301 states have call predecessors, (10570), 10342 states have call successors, (10570) [2023-12-02 19:18:09,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29436 states to 29436 states and 43451 transitions. [2023-12-02 19:18:09,096 INFO L78 Accepts]: Start accepts. Automaton has 29436 states and 43451 transitions. Word has length 160 [2023-12-02 19:18:09,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:18:09,096 INFO L495 AbstractCegarLoop]: Abstraction has 29436 states and 43451 transitions. [2023-12-02 19:18:09,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-02 19:18:09,097 INFO L276 IsEmpty]: Start isEmpty. Operand 29436 states and 43451 transitions. [2023-12-02 19:18:09,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-02 19:18:09,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:18:09,140 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:18:09,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:18:09,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:18:09,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:18:09,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:18:09,348 INFO L85 PathProgramCache]: Analyzing trace with hash -443933452, now seen corresponding path program 1 times [2023-12-02 19:18:09,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:18:09,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327452473] [2023-12-02 19:18:09,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:18:09,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:18:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:18:09,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:18:09,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327452473] [2023-12-02 19:18:09,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-02 19:18:09,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124196689] [2023-12-02 19:18:09,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:18:09,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:18:09,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:18:09,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:18:09,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 19:18:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:18:12,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 9549 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 19:18:12,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:18:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-12-02 19:18:12,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:18:12,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124196689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:18:12,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:18:12,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:18:12,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978131045] [2023-12-02 19:18:12,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:18:12,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:18:12,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:18:12,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:18:12,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:18:12,909 INFO L87 Difference]: Start difference. First operand 29436 states and 43451 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-12-02 19:18:17,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:18:23,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:18:25,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:18:31,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:18:31,119 INFO L93 Difference]: Finished difference Result 73722 states and 108833 transitions. [2023-12-02 19:18:31,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:18:31,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 188 [2023-12-02 19:18:31,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:18:31,309 INFO L225 Difference]: With dead ends: 73722 [2023-12-02 19:18:31,309 INFO L226 Difference]: Without dead ends: 44289 [2023-12-02 19:18:31,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:18:31,416 INFO L413 NwaCegarLoop]: 5102 mSDtfsCounter, 5466 mSDsluCounter, 5050 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 29 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5466 SdHoareTripleChecker+Valid, 10152 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2023-12-02 19:18:31,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5466 Valid, 10152 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 916 Invalid, 3 Unknown, 0 Unchecked, 16.8s Time] [2023-12-02 19:18:31,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44289 states. [2023-12-02 19:18:33,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44289 to 44278. [2023-12-02 19:18:33,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44278 states, 26329 states have (on average 1.2876675908693835) internal successors, (33903), 27363 states have internal predecessors, (33903), 15551 states have call successors, (15551), 2398 states have call predecessors, (15551), 2397 states have return successors, (15886), 15488 states have call predecessors, (15886), 15550 states have call successors, (15886) [2023-12-02 19:18:33,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44278 states to 44278 states and 65340 transitions. [2023-12-02 19:18:33,831 INFO L78 Accepts]: Start accepts. Automaton has 44278 states and 65340 transitions. Word has length 188 [2023-12-02 19:18:33,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:18:33,832 INFO L495 AbstractCegarLoop]: Abstraction has 44278 states and 65340 transitions. [2023-12-02 19:18:33,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-12-02 19:18:33,832 INFO L276 IsEmpty]: Start isEmpty. Operand 44278 states and 65340 transitions. [2023-12-02 19:18:33,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-02 19:18:33,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:18:33,871 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:18:33,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 19:18:34,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:18:34,072 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:18:34,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:18:34,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1838245216, now seen corresponding path program 1 times [2023-12-02 19:18:34,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:18:34,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279977549] [2023-12-02 19:18:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:18:34,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:18:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:18:34,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:18:34,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279977549] [2023-12-02 19:18:34,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-02 19:18:34,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032204757] [2023-12-02 19:18:34,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:18:34,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:18:34,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:18:34,798 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:18:34,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 19:18:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:18:37,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 9549 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:18:37,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:18:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2023-12-02 19:18:37,316 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:18:37,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032204757] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:18:37,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:18:37,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:18:37,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525956283] [2023-12-02 19:18:37,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:18:37,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:18:37,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:18:37,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:18:37,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:18:37,319 INFO L87 Difference]: Start difference. First operand 44278 states and 65340 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 19:18:42,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:18:44,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:18:50,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:18:51,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:18:51,908 INFO L93 Difference]: Finished difference Result 66463 states and 98462 transitions. [2023-12-02 19:18:51,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:18:51,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 188 [2023-12-02 19:18:51,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:18:52,121 INFO L225 Difference]: With dead ends: 66463 [2023-12-02 19:18:52,121 INFO L226 Difference]: Without dead ends: 44302 [2023-12-02 19:18:52,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:18:52,204 INFO L413 NwaCegarLoop]: 5130 mSDtfsCounter, 4 mSDsluCounter, 5124 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10254 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:18:52,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10254 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 855 Invalid, 3 Unknown, 0 Unchecked, 13.4s Time] [2023-12-02 19:18:52,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44302 states. [2023-12-02 19:18:54,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44302 to 44302. [2023-12-02 19:18:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44302 states, 26347 states have (on average 1.2874710593236423) internal successors, (33921), 27387 states have internal predecessors, (33921), 15551 states have call successors, (15551), 2398 states have call predecessors, (15551), 2403 states have return successors, (15892), 15488 states have call predecessors, (15892), 15550 states have call successors, (15892) [2023-12-02 19:18:54,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44302 states to 44302 states and 65364 transitions. [2023-12-02 19:18:54,644 INFO L78 Accepts]: Start accepts. Automaton has 44302 states and 65364 transitions. Word has length 188 [2023-12-02 19:18:54,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:18:54,645 INFO L495 AbstractCegarLoop]: Abstraction has 44302 states and 65364 transitions. [2023-12-02 19:18:54,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 19:18:54,645 INFO L276 IsEmpty]: Start isEmpty. Operand 44302 states and 65364 transitions. [2023-12-02 19:18:54,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-02 19:18:54,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:18:54,670 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:18:54,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 19:18:54,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:18:54,870 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:18:54,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:18:54,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1763302204, now seen corresponding path program 1 times [2023-12-02 19:18:54,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:18:54,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301784439] [2023-12-02 19:18:54,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:18:54,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:18:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:18:55,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:18:55,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301784439] [2023-12-02 19:18:55,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-02 19:18:55,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360366533] [2023-12-02 19:18:55,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:18:55,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:18:55,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:18:55,379 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:18:55,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 19:18:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:18:57,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 9557 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:18:57,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:18:58,101 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-12-02 19:18:58,102 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:18:58,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360366533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:18:58,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:18:58,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:18:58,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518203735] [2023-12-02 19:18:58,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:18:58,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:18:58,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:18:58,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:18:58,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:18:58,104 INFO L87 Difference]: Start difference. First operand 44302 states and 65364 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 19:19:05,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:19:07,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:19:09,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:19:17,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:19:19,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:19:21,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:19:22,000 INFO L93 Difference]: Finished difference Result 88624 states and 130755 transitions. [2023-12-02 19:19:22,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:19:22,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 189 [2023-12-02 19:19:22,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:19:22,213 INFO L225 Difference]: With dead ends: 88624 [2023-12-02 19:19:22,213 INFO L226 Difference]: Without dead ends: 44310 [2023-12-02 19:19:22,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:19:22,348 INFO L413 NwaCegarLoop]: 5128 mSDtfsCounter, 10 mSDsluCounter, 10252 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 15380 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:19:22,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 15380 Invalid, 1298 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1292 Invalid, 4 Unknown, 0 Unchecked, 22.1s Time] [2023-12-02 19:19:22,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44310 states. [2023-12-02 19:19:24,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44310 to 44297. [2023-12-02 19:19:24,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44297 states, 26345 states have (on average 1.2873790092996773) internal successors, (33916), 27387 states have internal predecessors, (33916), 15548 states have call successors, (15548), 2398 states have call predecessors, (15548), 2403 states have return successors, (15889), 15483 states have call predecessors, (15889), 15547 states have call successors, (15889) [2023-12-02 19:19:24,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44297 states to 44297 states and 65353 transitions. [2023-12-02 19:19:24,716 INFO L78 Accepts]: Start accepts. Automaton has 44297 states and 65353 transitions. Word has length 189 [2023-12-02 19:19:24,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:19:24,716 INFO L495 AbstractCegarLoop]: Abstraction has 44297 states and 65353 transitions. [2023-12-02 19:19:24,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 19:19:24,716 INFO L276 IsEmpty]: Start isEmpty. Operand 44297 states and 65353 transitions. [2023-12-02 19:19:24,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-02 19:19:24,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:19:24,739 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:19:24,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 19:19:24,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 19:19:24,939 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:19:24,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:19:24,940 INFO L85 PathProgramCache]: Analyzing trace with hash 441417103, now seen corresponding path program 1 times [2023-12-02 19:19:24,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:19:24,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652620479] [2023-12-02 19:19:24,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:24,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:19:25,363 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:19:25,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702835856] [2023-12-02 19:19:25,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:25,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:19:25,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:19:25,367 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:19:25,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 19:19:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:28,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 9680 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 19:19:28,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:19:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 52 proven. 20 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-12-02 19:19:29,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:19:33,042 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-12-02 19:19:33,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:19:33,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652620479] [2023-12-02 19:19:33,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:19:33,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702835856] [2023-12-02 19:19:33,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702835856] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 19:19:33,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:19:33,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2023-12-02 19:19:33,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180128629] [2023-12-02 19:19:33,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:19:33,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:19:33,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:19:33,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:19:33,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:19:33,047 INFO L87 Difference]: Start difference. First operand 44297 states and 65353 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-12-02 19:19:51,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:19:53,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:19:55,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:20:25,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:20:27,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:20:29,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:20:31,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:20:47,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:20:50,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:20:56,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:20:58,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:20:59,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:21:04,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:21:18,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:21:18,488 INFO L93 Difference]: Finished difference Result 93735 states and 139088 transitions. [2023-12-02 19:21:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:21:18,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) Word has length 198 [2023-12-02 19:21:18,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:21:18,724 INFO L225 Difference]: With dead ends: 93735 [2023-12-02 19:21:18,725 INFO L226 Difference]: Without dead ends: 49369 [2023-12-02 19:21:18,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 384 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:21:18,871 INFO L413 NwaCegarLoop]: 5589 mSDtfsCounter, 12005 mSDsluCounter, 3880 mSDsCounter, 0 mSdLazyCounter, 9398 mSolverCounterSat, 3806 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13306 SdHoareTripleChecker+Valid, 9469 SdHoareTripleChecker+Invalid, 13213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3806 IncrementalHoareTripleChecker+Valid, 9398 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:21:18,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13306 Valid, 9469 Invalid, 13213 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3806 Valid, 9398 Invalid, 9 Unknown, 0 Unchecked, 102.3s Time] [2023-12-02 19:21:18,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49369 states. [2023-12-02 19:21:21,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49369 to 48833. [2023-12-02 19:21:21,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48833 states, 28985 states have (on average 1.281283422459893) internal successors, (37138), 30087 states have internal predecessors, (37138), 17186 states have call successors, (17186), 2398 states have call predecessors, (17186), 2661 states have return successors, (17979), 17409 states have call predecessors, (17979), 17185 states have call successors, (17979) [2023-12-02 19:21:21,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48833 states to 48833 states and 72303 transitions. [2023-12-02 19:21:21,791 INFO L78 Accepts]: Start accepts. Automaton has 48833 states and 72303 transitions. Word has length 198 [2023-12-02 19:21:21,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:21:21,792 INFO L495 AbstractCegarLoop]: Abstraction has 48833 states and 72303 transitions. [2023-12-02 19:21:21,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-12-02 19:21:21,792 INFO L276 IsEmpty]: Start isEmpty. Operand 48833 states and 72303 transitions. [2023-12-02 19:21:21,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-02 19:21:21,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:21:21,828 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:21:21,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-02 19:21:22,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 19:21:22,028 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:21:22,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:21:22,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1159786152, now seen corresponding path program 1 times [2023-12-02 19:21:22,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:21:22,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104849054] [2023-12-02 19:21:22,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:21:22,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:21:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:21:22,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:21:22,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104849054] [2023-12-02 19:21:22,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-02 19:21:22,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303426282] [2023-12-02 19:21:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:21:22,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:21:22,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:21:22,423 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:21:22,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 19:21:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:21:25,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 9751 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 19:21:25,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:21:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-02 19:21:25,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:21:25,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303426282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:21:25,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:21:25,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:21:25,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345291713] [2023-12-02 19:21:25,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:21:25,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:21:25,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:21:25,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:21:25,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:21:25,159 INFO L87 Difference]: Start difference. First operand 48833 states and 72303 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-02 19:21:31,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:21:33,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:21:35,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:21:38,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:21:45,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:21:45,338 INFO L93 Difference]: Finished difference Result 123405 states and 182398 transitions. [2023-12-02 19:21:45,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:21:45,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 252 [2023-12-02 19:21:45,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:21:45,739 INFO L225 Difference]: With dead ends: 123405 [2023-12-02 19:21:45,739 INFO L226 Difference]: Without dead ends: 74575 [2023-12-02 19:21:45,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:21:45,877 INFO L413 NwaCegarLoop]: 6253 mSDtfsCounter, 4206 mSDsluCounter, 5120 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4206 SdHoareTripleChecker+Valid, 11373 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:21:45,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4206 Valid, 11373 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 998 Invalid, 3 Unknown, 0 Unchecked, 17.2s Time] [2023-12-02 19:21:45,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74575 states. [2023-12-02 19:21:49,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74575 to 74552. [2023-12-02 19:21:49,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74552 states, 44372 states have (on average 1.282204994140449) internal successors, (56894), 46005 states have internal predecessors, (56894), 26001 states have call successors, (26001), 3771 states have call predecessors, (26001), 4178 states have return successors, (27158), 26369 states have call predecessors, (27158), 26000 states have call successors, (27158) [2023-12-02 19:21:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74552 states to 74552 states and 110053 transitions. [2023-12-02 19:21:50,276 INFO L78 Accepts]: Start accepts. Automaton has 74552 states and 110053 transitions. Word has length 252 [2023-12-02 19:21:50,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:21:50,277 INFO L495 AbstractCegarLoop]: Abstraction has 74552 states and 110053 transitions. [2023-12-02 19:21:50,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-02 19:21:50,277 INFO L276 IsEmpty]: Start isEmpty. Operand 74552 states and 110053 transitions. [2023-12-02 19:21:50,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-12-02 19:21:50,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:21:50,362 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:21:50,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-02 19:21:50,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:21:50,563 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:21:50,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:21:50,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1406122806, now seen corresponding path program 1 times [2023-12-02 19:21:50,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:21:50,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251674057] [2023-12-02 19:21:50,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:21:50,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:21:50,894 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:21:50,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413873402] [2023-12-02 19:21:50,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:21:50,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:21:50,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:21:50,896 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:21:50,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 19:21:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:21:53,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 10055 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:21:53,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:21:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-02 19:21:53,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:21:53,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:21:53,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251674057] [2023-12-02 19:21:53,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:21:53,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413873402] [2023-12-02 19:21:53,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413873402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:21:53,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:21:53,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:21:53,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544192427] [2023-12-02 19:21:53,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:21:53,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:21:53,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:21:53,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:21:53,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:21:53,694 INFO L87 Difference]: Start difference. First operand 74552 states and 110053 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 3 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2023-12-02 19:22:00,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:22:02,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:22:08,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:22:10,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:22:12,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:22:12,562 INFO L93 Difference]: Finished difference Result 149497 states and 221014 transitions. [2023-12-02 19:22:12,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:22:12,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 3 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 289 [2023-12-02 19:22:12,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:22:13,045 INFO L225 Difference]: With dead ends: 149497 [2023-12-02 19:22:13,045 INFO L226 Difference]: Without dead ends: 74948 [2023-12-02 19:22:13,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:22:13,292 INFO L413 NwaCegarLoop]: 5156 mSDtfsCounter, 51 mSDsluCounter, 5086 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 10242 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:22:13,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 10242 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 858 Invalid, 3 Unknown, 0 Unchecked, 15.4s Time] [2023-12-02 19:22:13,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74948 states. [2023-12-02 19:22:17,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74948 to 74624. [2023-12-02 19:22:17,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74624 states, 44432 states have (on average 1.2820939863161684) internal successors, (56966), 46065 states have internal predecessors, (56966), 26013 states have call successors, (26013), 3771 states have call predecessors, (26013), 4178 states have return successors, (27170), 26381 states have call predecessors, (27170), 26012 states have call successors, (27170) [2023-12-02 19:22:17,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74624 states to 74624 states and 110149 transitions. [2023-12-02 19:22:17,657 INFO L78 Accepts]: Start accepts. Automaton has 74624 states and 110149 transitions. Word has length 289 [2023-12-02 19:22:17,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:22:17,658 INFO L495 AbstractCegarLoop]: Abstraction has 74624 states and 110149 transitions. [2023-12-02 19:22:17,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 3 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2023-12-02 19:22:17,658 INFO L276 IsEmpty]: Start isEmpty. Operand 74624 states and 110149 transitions. [2023-12-02 19:22:17,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-02 19:22:17,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:22:17,706 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:22:17,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 19:22:17,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:22:17,909 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:22:17,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:22:17,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1229261363, now seen corresponding path program 1 times [2023-12-02 19:22:17,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:22:17,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312005208] [2023-12-02 19:22:17,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:22:17,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:22:18,194 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:22:18,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761287199] [2023-12-02 19:22:18,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:22:18,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:22:18,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:22:18,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:22:18,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 19:22:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:22:20,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 10075 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 19:22:20,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:22:20,802 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 19:22:20,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:22:20,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:22:20,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312005208] [2023-12-02 19:22:20,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:22:20,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761287199] [2023-12-02 19:22:20,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761287199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:22:20,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:22:20,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:22:20,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645527136] [2023-12-02 19:22:20,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:22:20,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:22:20,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:22:20,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:22:20,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:22:20,806 INFO L87 Difference]: Start difference. First operand 74624 states and 110149 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (50), 3 states have call predecessors, (50), 2 states have call successors, (50) [2023-12-02 19:22:31,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:22:33,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:22:35,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:22:37,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:22:47,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:22:49,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:22:51,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:22:53,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:22:53,992 INFO L93 Difference]: Finished difference Result 149373 states and 222313 transitions. [2023-12-02 19:22:53,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:22:53,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (50), 3 states have call predecessors, (50), 2 states have call successors, (50) Word has length 290 [2023-12-02 19:22:53,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:22:54,277 INFO L225 Difference]: With dead ends: 149373 [2023-12-02 19:22:54,277 INFO L226 Difference]: Without dead ends: 74752 [2023-12-02 19:22:54,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:22:54,511 INFO L413 NwaCegarLoop]: 5130 mSDtfsCounter, 2 mSDsluCounter, 15385 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20515 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.8s IncrementalHoareTripleChecker+Time [2023-12-02 19:22:54,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 20515 Invalid, 1724 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1718 Invalid, 5 Unknown, 0 Unchecked, 29.8s Time] [2023-12-02 19:22:54,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74752 states. [2023-12-02 19:22:58,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74752 to 74704. [2023-12-02 19:22:58,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74704 states, 44492 states have (on average 1.2817135664838624) internal successors, (57026), 46125 states have internal predecessors, (57026), 26013 states have call successors, (26013), 3771 states have call predecessors, (26013), 4198 states have return successors, (27300), 26401 states have call predecessors, (27300), 26012 states have call successors, (27300) [2023-12-02 19:22:58,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74704 states to 74704 states and 110339 transitions. [2023-12-02 19:22:58,744 INFO L78 Accepts]: Start accepts. Automaton has 74704 states and 110339 transitions. Word has length 290 [2023-12-02 19:22:58,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:22:58,745 INFO L495 AbstractCegarLoop]: Abstraction has 74704 states and 110339 transitions. [2023-12-02 19:22:58,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (50), 3 states have call predecessors, (50), 2 states have call successors, (50) [2023-12-02 19:22:58,745 INFO L276 IsEmpty]: Start isEmpty. Operand 74704 states and 110339 transitions. [2023-12-02 19:22:58,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-02 19:22:58,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:22:58,813 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:22:58,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 19:22:59,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 19:22:59,014 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:22:59,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:22:59,014 INFO L85 PathProgramCache]: Analyzing trace with hash -284645131, now seen corresponding path program 1 times [2023-12-02 19:22:59,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:22:59,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405833233] [2023-12-02 19:22:59,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:22:59,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:22:59,245 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:22:59,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421044372] [2023-12-02 19:22:59,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:22:59,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:22:59,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:22:59,246 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:22:59,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 19:23:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:23:01,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 10106 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:23:01,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:23:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-02 19:23:02,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:23:02,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:23:02,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405833233] [2023-12-02 19:23:02,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:23:02,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421044372] [2023-12-02 19:23:02,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421044372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:23:02,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:23:02,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:23:02,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021494704] [2023-12-02 19:23:02,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:23:02,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:23:02,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:23:02,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:23:02,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:23:02,311 INFO L87 Difference]: Start difference. First operand 74704 states and 110339 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 3 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2023-12-02 19:23:08,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:23:10,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:23:15,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:23:18,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:23:18,321 INFO L93 Difference]: Finished difference Result 149489 states and 220794 transitions. [2023-12-02 19:23:18,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:23:18,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 3 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 294 [2023-12-02 19:23:18,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:23:18,604 INFO L225 Difference]: With dead ends: 149489 [2023-12-02 19:23:18,605 INFO L226 Difference]: Without dead ends: 74788 [2023-12-02 19:23:18,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:23:18,812 INFO L413 NwaCegarLoop]: 5130 mSDtfsCounter, 95 mSDsluCounter, 4975 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 10105 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:23:18,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 10105 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 843 Invalid, 2 Unknown, 0 Unchecked, 12.9s Time] [2023-12-02 19:23:18,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74788 states. [2023-12-02 19:23:22,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74788 to 74764. [2023-12-02 19:23:22,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74764 states, 44528 states have (on average 1.2814858066834351) internal successors, (57062), 46161 states have internal predecessors, (57062), 26037 states have call successors, (26037), 3771 states have call predecessors, (26037), 4198 states have return successors, (27324), 26425 states have call predecessors, (27324), 26036 states have call successors, (27324) [2023-12-02 19:23:23,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74764 states to 74764 states and 110423 transitions. [2023-12-02 19:23:23,053 INFO L78 Accepts]: Start accepts. Automaton has 74764 states and 110423 transitions. Word has length 294 [2023-12-02 19:23:23,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:23:23,054 INFO L495 AbstractCegarLoop]: Abstraction has 74764 states and 110423 transitions. [2023-12-02 19:23:23,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 3 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2023-12-02 19:23:23,054 INFO L276 IsEmpty]: Start isEmpty. Operand 74764 states and 110423 transitions. [2023-12-02 19:23:23,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2023-12-02 19:23:23,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:23:23,103 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:23:23,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 19:23:23,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 19:23:23,304 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:23:23,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:23:23,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1142878773, now seen corresponding path program 1 times [2023-12-02 19:23:23,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:23:23,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897289448] [2023-12-02 19:23:23,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:23:23,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:23:23,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:23:23,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027639725] [2023-12-02 19:23:23,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:23:23,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:23:23,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:23:23,567 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:23:23,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 19:23:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:23:26,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 10223 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 19:23:26,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:23:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-02 19:23:26,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:23:26,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:23:26,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897289448] [2023-12-02 19:23:26,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:23:26,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027639725] [2023-12-02 19:23:26,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027639725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:23:26,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:23:26,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:23:26,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575601111] [2023-12-02 19:23:26,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:23:26,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:23:26,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:23:26,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:23:26,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:23:26,197 INFO L87 Difference]: Start difference. First operand 74764 states and 110423 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 3 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2023-12-02 19:23:31,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:23:33,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:23:41,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:23:41,958 INFO L93 Difference]: Finished difference Result 149609 states and 220962 transitions. [2023-12-02 19:23:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:23:41,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 3 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 307 [2023-12-02 19:23:41,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:23:42,267 INFO L225 Difference]: With dead ends: 149609 [2023-12-02 19:23:42,267 INFO L226 Difference]: Without dead ends: 74848 [2023-12-02 19:23:42,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:23:42,489 INFO L413 NwaCegarLoop]: 5130 mSDtfsCounter, 101 mSDsluCounter, 4975 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 10105 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2023-12-02 19:23:42,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 10105 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 841 Invalid, 2 Unknown, 0 Unchecked, 12.8s Time] [2023-12-02 19:23:42,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74848 states. [2023-12-02 19:23:46,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74848 to 74764. [2023-12-02 19:23:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74764 states, 44528 states have (on average 1.2814858066834351) internal successors, (57062), 46161 states have internal predecessors, (57062), 26037 states have call successors, (26037), 3771 states have call predecessors, (26037), 4198 states have return successors, (27324), 26425 states have call predecessors, (27324), 26036 states have call successors, (27324) [2023-12-02 19:23:46,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74764 states to 74764 states and 110423 transitions. [2023-12-02 19:23:46,670 INFO L78 Accepts]: Start accepts. Automaton has 74764 states and 110423 transitions. Word has length 307 [2023-12-02 19:23:46,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:23:46,670 INFO L495 AbstractCegarLoop]: Abstraction has 74764 states and 110423 transitions. [2023-12-02 19:23:46,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 3 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2023-12-02 19:23:46,670 INFO L276 IsEmpty]: Start isEmpty. Operand 74764 states and 110423 transitions. [2023-12-02 19:23:46,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-12-02 19:23:46,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:23:46,730 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:23:46,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 19:23:46,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:23:46,931 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:23:46,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:23:46,931 INFO L85 PathProgramCache]: Analyzing trace with hash 462453970, now seen corresponding path program 1 times [2023-12-02 19:23:46,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:23:46,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575145037] [2023-12-02 19:23:46,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:23:46,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:23:47,399 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:23:47,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622146165] [2023-12-02 19:23:47,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:23:47,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:23:47,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:23:47,401 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:23:47,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 19:23:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:23:50,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 10567 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 19:23:50,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:23:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-02 19:23:50,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:23:50,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:23:50,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575145037] [2023-12-02 19:23:50,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:23:50,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622146165] [2023-12-02 19:23:50,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622146165] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:23:50,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:23:50,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:23:50,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510795783] [2023-12-02 19:23:50,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:23:50,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:23:50,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:23:50,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:23:50,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:23:50,313 INFO L87 Difference]: Start difference. First operand 74764 states and 110423 transitions. Second operand has 6 states, 4 states have (on average 46.75) internal successors, (187), 5 states have internal predecessors, (187), 3 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2023-12-02 19:24:01,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:24:03,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:24:05,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:24:07,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:24:09,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:24:18,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:24:25,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:24:27,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:24:29,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:24:30,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:24:33,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:24:33,606 INFO L93 Difference]: Finished difference Result 149525 states and 220842 transitions. [2023-12-02 19:24:33,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:24:33,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 46.75) internal successors, (187), 5 states have internal predecessors, (187), 3 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 350 [2023-12-02 19:24:33,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:24:33,903 INFO L225 Difference]: With dead ends: 149525 [2023-12-02 19:24:33,903 INFO L226 Difference]: Without dead ends: 74764 [2023-12-02 19:24:34,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:24:34,221 INFO L413 NwaCegarLoop]: 5002 mSDtfsCounter, 17 mSDsluCounter, 19856 mSDsCounter, 0 mSdLazyCounter, 2896 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 24858 SdHoareTripleChecker+Invalid, 2902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2896 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:24:34,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 24858 Invalid, 2902 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2896 Invalid, 6 Unknown, 0 Unchecked, 39.9s Time] [2023-12-02 19:24:34,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74764 states. [2023-12-02 19:24:38,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74764 to 74764. [2023-12-02 19:24:38,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74764 states, 44528 states have (on average 1.2812163133309378) internal successors, (57050), 46161 states have internal predecessors, (57050), 26037 states have call successors, (26037), 3771 states have call predecessors, (26037), 4198 states have return successors, (27324), 26425 states have call predecessors, (27324), 26036 states have call successors, (27324) [2023-12-02 19:24:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74764 states to 74764 states and 110411 transitions. [2023-12-02 19:24:38,448 INFO L78 Accepts]: Start accepts. Automaton has 74764 states and 110411 transitions. Word has length 350 [2023-12-02 19:24:38,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:24:38,448 INFO L495 AbstractCegarLoop]: Abstraction has 74764 states and 110411 transitions. [2023-12-02 19:24:38,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 46.75) internal successors, (187), 5 states have internal predecessors, (187), 3 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2023-12-02 19:24:38,449 INFO L276 IsEmpty]: Start isEmpty. Operand 74764 states and 110411 transitions. [2023-12-02 19:24:38,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2023-12-02 19:24:38,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:24:38,507 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:24:38,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 19:24:38,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:24:38,708 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:24:38,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:24:38,709 INFO L85 PathProgramCache]: Analyzing trace with hash 116743119, now seen corresponding path program 1 times [2023-12-02 19:24:38,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:24:38,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151240807] [2023-12-02 19:24:38,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:24:38,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:24:39,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:24:39,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806272535] [2023-12-02 19:24:39,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:24:39,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:24:39,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:24:39,086 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:24:39,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 19:24:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:24:41,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 10598 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-02 19:24:41,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:24:42,182 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-12-02 19:24:42,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:24:42,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:24:42,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151240807] [2023-12-02 19:24:42,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:24:42,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806272535] [2023-12-02 19:24:42,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806272535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:24:42,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:24:42,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 19:24:42,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380619014] [2023-12-02 19:24:42,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:24:42,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 19:24:42,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:24:42,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 19:24:42,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:24:42,185 INFO L87 Difference]: Start difference. First operand 74764 states and 110411 transitions. Second operand has 9 states, 6 states have (on average 32.0) internal successors, (192), 7 states have internal predecessors, (192), 4 states have call successors, (64), 2 states have call predecessors, (64), 3 states have return successors, (63), 4 states have call predecessors, (63), 4 states have call successors, (63) [2023-12-02 19:24:59,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:25:01,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:25:03,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:25:05,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:25:07,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:25:09,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:25:11,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:25:13,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:25:35,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:25:37,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:25:39,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:25:41,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:25:43,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:25:47,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:25:47,356 INFO L93 Difference]: Finished difference Result 149531 states and 220824 transitions. [2023-12-02 19:25:47,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 19:25:47,357 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 32.0) internal successors, (192), 7 states have internal predecessors, (192), 4 states have call successors, (64), 2 states have call predecessors, (64), 3 states have return successors, (63), 4 states have call predecessors, (63), 4 states have call successors, (63) Word has length 354 [2023-12-02 19:25:47,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:25:47,746 INFO L225 Difference]: With dead ends: 149531 [2023-12-02 19:25:47,746 INFO L226 Difference]: Without dead ends: 74770 [2023-12-02 19:25:47,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-02 19:25:47,989 INFO L413 NwaCegarLoop]: 5000 mSDtfsCounter, 19 mSDsluCounter, 34835 mSDsCounter, 0 mSdLazyCounter, 4584 mSolverCounterSat, 4 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 39835 SdHoareTripleChecker+Invalid, 4596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 4584 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:25:47,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 39835 Invalid, 4596 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 4584 Invalid, 8 Unknown, 0 Unchecked, 61.4s Time] [2023-12-02 19:25:48,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74770 states. [2023-12-02 19:25:51,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74770 to 74764. [2023-12-02 19:25:51,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74764 states, 44528 states have (on average 1.281081566654689) internal successors, (57044), 46161 states have internal predecessors, (57044), 26037 states have call successors, (26037), 3771 states have call predecessors, (26037), 4198 states have return successors, (27324), 26425 states have call predecessors, (27324), 26036 states have call successors, (27324) [2023-12-02 19:25:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74764 states to 74764 states and 110405 transitions. [2023-12-02 19:25:52,369 INFO L78 Accepts]: Start accepts. Automaton has 74764 states and 110405 transitions. Word has length 354 [2023-12-02 19:25:52,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:25:52,370 INFO L495 AbstractCegarLoop]: Abstraction has 74764 states and 110405 transitions. [2023-12-02 19:25:52,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 32.0) internal successors, (192), 7 states have internal predecessors, (192), 4 states have call successors, (64), 2 states have call predecessors, (64), 3 states have return successors, (63), 4 states have call predecessors, (63), 4 states have call successors, (63) [2023-12-02 19:25:52,370 INFO L276 IsEmpty]: Start isEmpty. Operand 74764 states and 110405 transitions. [2023-12-02 19:25:52,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-12-02 19:25:52,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:25:52,450 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:25:52,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 19:25:52,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:25:52,651 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:25:52,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:25:52,651 INFO L85 PathProgramCache]: Analyzing trace with hash 923240291, now seen corresponding path program 1 times [2023-12-02 19:25:52,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:25:52,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205894931] [2023-12-02 19:25:52,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:25:52,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:25:53,109 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:25:53,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749305972] [2023-12-02 19:25:53,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:25:53,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:25:53,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:25:53,111 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:25:53,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 19:25:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:25:55,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 10556 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 19:25:55,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:25:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-02 19:25:55,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:25:55,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:25:55,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205894931] [2023-12-02 19:25:55,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:25:55,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749305972] [2023-12-02 19:25:55,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749305972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:25:55,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:25:55,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:25:55,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143498591] [2023-12-02 19:25:55,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:25:55,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:25:55,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:25:55,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:25:55,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:25:55,827 INFO L87 Difference]: Start difference. First operand 74764 states and 110405 transitions. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 3 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2023-12-02 19:26:04,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:26:06,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:26:08,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:26:10,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:26:16,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:26:21,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:26:23,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:26:25,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:26:26,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:26:28,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:26:28,683 INFO L93 Difference]: Finished difference Result 112566 states and 166107 transitions. [2023-12-02 19:26:28,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:26:28,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 3 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 356 [2023-12-02 19:26:28,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:26:28,838 INFO L225 Difference]: With dead ends: 112566 [2023-12-02 19:26:28,838 INFO L226 Difference]: Without dead ends: 37769 [2023-12-02 19:26:29,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:26:29,128 INFO L413 NwaCegarLoop]: 5128 mSDtfsCounter, 16 mSDsluCounter, 15371 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 6 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 20499 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:26:29,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 20499 Invalid, 1738 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 1727 Invalid, 5 Unknown, 0 Unchecked, 30.6s Time] [2023-12-02 19:26:29,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37769 states. [2023-12-02 19:26:30,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37769 to 37506. [2023-12-02 19:26:30,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37506 states, 22356 states have (on average 1.2816693505099301) internal successors, (28653), 23175 states have internal predecessors, (28653), 13031 states have call successors, (13031), 1905 states have call predecessors, (13031), 2118 states have return successors, (13673), 13222 states have call predecessors, (13673), 13030 states have call successors, (13673) [2023-12-02 19:26:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37506 states to 37506 states and 55357 transitions. [2023-12-02 19:26:30,947 INFO L78 Accepts]: Start accepts. Automaton has 37506 states and 55357 transitions. Word has length 356 [2023-12-02 19:26:30,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:26:30,948 INFO L495 AbstractCegarLoop]: Abstraction has 37506 states and 55357 transitions. [2023-12-02 19:26:30,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 3 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2023-12-02 19:26:30,948 INFO L276 IsEmpty]: Start isEmpty. Operand 37506 states and 55357 transitions. [2023-12-02 19:26:30,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-02 19:26:30,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:26:30,979 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:26:31,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 19:26:31,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 19:26:31,180 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:26:31,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:26:31,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1951000289, now seen corresponding path program 1 times [2023-12-02 19:26:31,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:26:31,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715034601] [2023-12-02 19:26:31,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:26:31,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:26:31,569 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:26:31,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470673631] [2023-12-02 19:26:31,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:26:31,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:26:31,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:26:31,571 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:26:31,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 19:26:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:26:34,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 10629 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-02 19:26:34,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:26:34,698 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-02 19:26:34,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:26:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-12-02 19:26:35,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:26:35,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715034601] [2023-12-02 19:26:35,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:26:35,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470673631] [2023-12-02 19:26:35,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470673631] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 19:26:35,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:26:35,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-12-02 19:26:35,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343333086] [2023-12-02 19:26:35,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:26:35,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:26:35,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:26:35,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:26:35,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-02 19:26:35,931 INFO L87 Difference]: Start difference. First operand 37506 states and 55357 transitions. Second operand has 6 states, 4 states have (on average 45.75) internal successors, (183), 5 states have internal predecessors, (183), 3 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2023-12-02 19:26:46,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:26:48,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:26:50,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:26:52,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:26:54,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:27:13,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:27:15,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:27:17,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:27:17,821 INFO L93 Difference]: Finished difference Result 37516 states and 55366 transitions. [2023-12-02 19:27:17,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:27:17,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 45.75) internal successors, (183), 5 states have internal predecessors, (183), 3 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 358 [2023-12-02 19:27:17,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:27:18,001 INFO L225 Difference]: With dead ends: 37516 [2023-12-02 19:27:18,001 INFO L226 Difference]: Without dead ends: 37506 [2023-12-02 19:27:18,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 703 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-12-02 19:27:18,013 INFO L413 NwaCegarLoop]: 5000 mSDtfsCounter, 3 mSDsluCounter, 19868 mSDsCounter, 0 mSdLazyCounter, 2895 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24868 SdHoareTripleChecker+Invalid, 2902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2895 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:27:18,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24868 Invalid, 2902 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2895 Invalid, 7 Unknown, 0 Unchecked, 40.6s Time] [2023-12-02 19:27:18,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37506 states. [2023-12-02 19:27:19,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37506 to 37506. [2023-12-02 19:27:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37506 states, 22356 states have (on average 1.2814009661835748) internal successors, (28647), 23175 states have internal predecessors, (28647), 13031 states have call successors, (13031), 1905 states have call predecessors, (13031), 2118 states have return successors, (13673), 13222 states have call predecessors, (13673), 13030 states have call successors, (13673) [2023-12-02 19:27:19,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37506 states to 37506 states and 55351 transitions. [2023-12-02 19:27:19,748 INFO L78 Accepts]: Start accepts. Automaton has 37506 states and 55351 transitions. Word has length 358 [2023-12-02 19:27:19,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:27:19,749 INFO L495 AbstractCegarLoop]: Abstraction has 37506 states and 55351 transitions. [2023-12-02 19:27:19,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 45.75) internal successors, (183), 5 states have internal predecessors, (183), 3 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2023-12-02 19:27:19,749 INFO L276 IsEmpty]: Start isEmpty. Operand 37506 states and 55351 transitions. [2023-12-02 19:27:19,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-12-02 19:27:19,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:27:19,797 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:27:19,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 19:27:19,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 19:27:19,998 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:27:19,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:27:19,998 INFO L85 PathProgramCache]: Analyzing trace with hash 79543567, now seen corresponding path program 1 times [2023-12-02 19:27:19,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:27:19,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374634727] [2023-12-02 19:27:19,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:27:19,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:27:20,341 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:27:20,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [453932257] [2023-12-02 19:27:20,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:27:20,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:27:20,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:27:20,342 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:27:20,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 19:27:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:27:23,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 10660 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:27:23,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:27:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 19:27:23,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:27:23,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:27:23,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374634727] [2023-12-02 19:27:23,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:27:23,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453932257] [2023-12-02 19:27:23,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453932257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:27:23,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:27:23,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:27:23,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531403529] [2023-12-02 19:27:23,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:27:23,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:27:23,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:27:23,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:27:23,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:27:23,341 INFO L87 Difference]: Start difference. First operand 37506 states and 55351 transitions. Second operand has 4 states, 3 states have (on average 64.66666666666667) internal successors, (194), 4 states have internal predecessors, (194), 2 states have call successors, (66), 2 states have call predecessors, (66), 3 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-02 19:27:29,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:27:31,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:27:33,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:27:37,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:27:43,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:27:45,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:27:45,276 INFO L93 Difference]: Finished difference Result 75035 states and 111680 transitions. [2023-12-02 19:27:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:27:45,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 64.66666666666667) internal successors, (194), 4 states have internal predecessors, (194), 2 states have call successors, (66), 2 states have call predecessors, (66), 3 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 362 [2023-12-02 19:27:45,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:27:45,405 INFO L225 Difference]: With dead ends: 75035 [2023-12-02 19:27:45,405 INFO L226 Difference]: Without dead ends: 37519 [2023-12-02 19:27:45,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:27:45,506 INFO L413 NwaCegarLoop]: 5127 mSDtfsCounter, 1 mSDsluCounter, 10240 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 12 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 15367 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:27:45,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 15367 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1296 Invalid, 4 Unknown, 0 Unchecked, 20.5s Time] [2023-12-02 19:27:45,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37519 states. [2023-12-02 19:27:47,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37519 to 37519. [2023-12-02 19:27:47,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37519 states, 22369 states have (on average 1.2812374267960123) internal successors, (28660), 23188 states have internal predecessors, (28660), 13031 states have call successors, (13031), 1905 states have call predecessors, (13031), 2118 states have return successors, (13673), 13222 states have call predecessors, (13673), 13030 states have call successors, (13673) [2023-12-02 19:27:47,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37519 states to 37519 states and 55364 transitions. [2023-12-02 19:27:47,389 INFO L78 Accepts]: Start accepts. Automaton has 37519 states and 55364 transitions. Word has length 362 [2023-12-02 19:27:47,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:27:47,390 INFO L495 AbstractCegarLoop]: Abstraction has 37519 states and 55364 transitions. [2023-12-02 19:27:47,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 64.66666666666667) internal successors, (194), 4 states have internal predecessors, (194), 2 states have call successors, (66), 2 states have call predecessors, (66), 3 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-02 19:27:47,390 INFO L276 IsEmpty]: Start isEmpty. Operand 37519 states and 55364 transitions. [2023-12-02 19:27:47,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-02 19:27:47,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:27:47,420 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:27:47,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 19:27:47,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 19:27:47,621 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:27:47,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:27:47,621 INFO L85 PathProgramCache]: Analyzing trace with hash 852977118, now seen corresponding path program 1 times [2023-12-02 19:27:47,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:27:47,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261582478] [2023-12-02 19:27:47,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:27:47,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:27:47,958 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:27:47,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377894812] [2023-12-02 19:27:47,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:27:47,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:27:47,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:27:47,960 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:27:47,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 19:27:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:27:50,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 10735 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 19:27:50,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:27:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-12-02 19:27:50,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:27:50,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:27:50,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261582478] [2023-12-02 19:27:50,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:27:50,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377894812] [2023-12-02 19:27:50,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377894812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:27:50,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:27:50,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:27:50,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654823475] [2023-12-02 19:27:50,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:27:50,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:27:50,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:27:50,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:27:50,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:27:50,970 INFO L87 Difference]: Start difference. First operand 37519 states and 55364 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-02 19:27:57,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:27:59,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:28:01,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:28:10,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:28:12,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:28:14,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:28:15,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:28:15,790 INFO L93 Difference]: Finished difference Result 76329 states and 112813 transitions. [2023-12-02 19:28:15,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:28:15,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 367 [2023-12-02 19:28:15,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:28:15,990 INFO L225 Difference]: With dead ends: 76329 [2023-12-02 19:28:15,990 INFO L226 Difference]: Without dead ends: 38887 [2023-12-02 19:28:16,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:28:16,081 INFO L413 NwaCegarLoop]: 5388 mSDtfsCounter, 295 mSDsluCounter, 10363 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 16 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 15751 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:28:16,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 15751 Invalid, 1322 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 1301 Invalid, 5 Unknown, 0 Unchecked, 23.3s Time] [2023-12-02 19:28:16,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38887 states. [2023-12-02 19:28:17,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38887 to 37531. [2023-12-02 19:28:17,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37531 states, 22381 states have (on average 1.2810866359858808) internal successors, (28672), 23200 states have internal predecessors, (28672), 13031 states have call successors, (13031), 1905 states have call predecessors, (13031), 2118 states have return successors, (13673), 13222 states have call predecessors, (13673), 13030 states have call successors, (13673) [2023-12-02 19:28:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37531 states to 37531 states and 55376 transitions. [2023-12-02 19:28:18,230 INFO L78 Accepts]: Start accepts. Automaton has 37531 states and 55376 transitions. Word has length 367 [2023-12-02 19:28:18,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:28:18,230 INFO L495 AbstractCegarLoop]: Abstraction has 37531 states and 55376 transitions. [2023-12-02 19:28:18,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-02 19:28:18,231 INFO L276 IsEmpty]: Start isEmpty. Operand 37531 states and 55376 transitions. [2023-12-02 19:28:18,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2023-12-02 19:28:18,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:28:18,268 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:28:18,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 19:28:18,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 19:28:18,469 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:28:18,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:28:18,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1775267495, now seen corresponding path program 1 times [2023-12-02 19:28:18,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:28:18,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130827140] [2023-12-02 19:28:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:28:18,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:28:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:28:18,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:28:18,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130827140] [2023-12-02 19:28:18,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-02 19:28:18,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166671281] [2023-12-02 19:28:18,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:28:18,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:28:18,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:28:18,831 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:28:18,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 19:28:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:28:21,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 10708 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 19:28:21,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:28:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-12-02 19:28:21,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:28:21,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166671281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:28:21,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:28:21,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:28:21,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954548771] [2023-12-02 19:28:21,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:28:21,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:28:21,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:28:21,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:28:21,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:28:21,977 INFO L87 Difference]: Start difference. First operand 37531 states and 55376 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 3 states have call successors, (77), 3 states have call predecessors, (77), 3 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2023-12-02 19:28:26,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:28:28,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:28:30,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:28:34,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:28:40,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:28:40,834 INFO L93 Difference]: Finished difference Result 97957 states and 144675 transitions. [2023-12-02 19:28:40,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:28:40,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 3 states have call successors, (77), 3 states have call predecessors, (77), 3 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) Word has length 400 [2023-12-02 19:28:40,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:28:41,214 INFO L225 Difference]: With dead ends: 97957 [2023-12-02 19:28:41,214 INFO L226 Difference]: Without dead ends: 60503 [2023-12-02 19:28:41,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:28:41,317 INFO L413 NwaCegarLoop]: 6534 mSDtfsCounter, 5516 mSDsluCounter, 4769 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5516 SdHoareTripleChecker+Valid, 11303 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:28:41,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5516 Valid, 11303 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 972 Invalid, 3 Unknown, 0 Unchecked, 16.6s Time] [2023-12-02 19:28:41,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60503 states. [2023-12-02 19:28:44,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60503 to 60447. [2023-12-02 19:28:44,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60447 states, 36042 states have (on average 1.2833915986904167) internal successors, (46256), 37401 states have internal predecessors, (46256), 21010 states have call successors, (21010), 3043 states have call predecessors, (21010), 3394 states have return successors, (22073), 21318 states have call predecessors, (22073), 21009 states have call successors, (22073) [2023-12-02 19:28:44,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60447 states to 60447 states and 89339 transitions. [2023-12-02 19:28:44,539 INFO L78 Accepts]: Start accepts. Automaton has 60447 states and 89339 transitions. Word has length 400 [2023-12-02 19:28:44,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:28:44,539 INFO L495 AbstractCegarLoop]: Abstraction has 60447 states and 89339 transitions. [2023-12-02 19:28:44,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 3 states have call successors, (77), 3 states have call predecessors, (77), 3 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2023-12-02 19:28:44,540 INFO L276 IsEmpty]: Start isEmpty. Operand 60447 states and 89339 transitions. [2023-12-02 19:28:44,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2023-12-02 19:28:44,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:28:44,593 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:28:44,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 19:28:44,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:28:44,794 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:28:44,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:28:44,795 INFO L85 PathProgramCache]: Analyzing trace with hash 651545542, now seen corresponding path program 1 times [2023-12-02 19:28:44,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:28:44,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278093515] [2023-12-02 19:28:44,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:28:44,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:28:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:28:45,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:28:45,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278093515] [2023-12-02 19:28:45,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-02 19:28:45,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944534192] [2023-12-02 19:28:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:28:45,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:28:45,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:28:45,163 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:28:45,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42cfcb4-56e4-48b1-b7c8-fdd56a5dc5fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 19:28:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:28:48,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 11020 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 19:28:48,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:28:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2023-12-02 19:28:48,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:28:48,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944534192] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:28:48,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:28:48,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:28:48,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079511897] [2023-12-02 19:28:48,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:28:48,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:28:48,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:28:48,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:28:48,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:28:48,221 INFO L87 Difference]: Start difference. First operand 60447 states and 89339 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2023-12-02 19:28:53,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:28:55,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []