./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.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_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/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_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/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_3d187e38-950e-4837-8881-595d34158001/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 949424244b253eebe8c539a6549e978b334eb11066ed24813c344448dac2db32 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 20:02:38,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 20:02:38,838 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 20:02:38,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 20:02:38,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 20:02:38,872 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 20:02:38,872 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 20:02:38,873 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 20:02:38,874 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 20:02:38,874 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 20:02:38,875 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 20:02:38,875 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 20:02:38,876 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 20:02:38,876 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 20:02:38,877 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 20:02:38,877 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 20:02:38,878 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 20:02:38,878 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 20:02:38,879 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 20:02:38,879 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 20:02:38,880 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 20:02:38,881 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 20:02:38,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 20:02:38,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 20:02:38,882 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 20:02:38,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 20:02:38,883 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 20:02:38,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 20:02:38,884 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 20:02:38,885 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 20:02:38,885 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 20:02:38,886 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 20:02:38,886 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 20:02:38,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 20:02:38,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:02:38,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 20:02:38,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 20:02:38,887 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 20:02:38,887 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 20:02:38,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 20:02:38,888 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 20:02:38,888 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 20:02:38,888 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 20:02:38,888 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 20:02:38,889 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_3d187e38-950e-4837-8881-595d34158001/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 949424244b253eebe8c539a6549e978b334eb11066ed24813c344448dac2db32 [2023-12-02 20:02:39,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 20:02:39,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 20:02:39,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 20:02:39,129 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 20:02:39,129 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 20:02:39,131 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2023-12-02 20:02:41,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 20:02:42,288 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 20:02:42,289 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2023-12-02 20:02:42,336 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/data/5976a5b64/459de7e8e68644b4b3ea6f9b117618ed/FLAG144993240 [2023-12-02 20:02:42,350 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/data/5976a5b64/459de7e8e68644b4b3ea6f9b117618ed [2023-12-02 20:02:42,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 20:02:42,354 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 20:02:42,355 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 20:02:42,355 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 20:02:42,361 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 20:02:42,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:02:42" (1/1) ... [2023-12-02 20:02:42,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78751512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:02:42, skipping insertion in model container [2023-12-02 20:02:42,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:02:42" (1/1) ... [2023-12-02 20:02:42,636 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 20:02:45,339 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_3d187e38-950e-4837-8881-595d34158001/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i[422408,422421] [2023-12-02 20:02:45,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:02:45,513 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 20:02:45,673 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"); [4297] [2023-12-02 20:02:45,675 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [4304] [2023-12-02 20:02:45,675 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)); [4311] [2023-12-02 20:02:45,675 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"); [4319-4320] [2023-12-02 20:02:45,676 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [4328-4329] [2023-12-02 20:02:45,677 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [4337-4338] [2023-12-02 20:02:45,677 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [4350] [2023-12-02 20:02:45,677 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapq %0": "=r" (val): "0" (val)); [4357] [2023-12-02 20:02:45,684 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incl %0": "+m" (v->counter)); [4596] [2023-12-02 20:02:45,685 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0": "+m" (v->counter)); [4603] [2023-12-02 20:02:45,686 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; xaddb %b0, %1\n": "+q" (__ret), "+m" (v->counter): : "memory", "cc"); [4614-4615] [2023-12-02 20:02:45,686 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; xaddw %w0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [4618-4619] [2023-12-02 20:02:45,686 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; xaddl %0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [4622-4623] [2023-12-02 20:02:45,687 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; xaddq %q0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [4626-4627] [2023-12-02 20:02:45,859 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/3533/dscv_tempdir/dscv/ri/43_2a/drivers/scsi/scsi_debug.c"), "i" (2717), "i" (12UL)); [8940-8941] [2023-12-02 20:02:45,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/3533/dscv_tempdir/dscv/ri/43_2a/drivers/scsi/scsi_debug.c"), "i" (2718), "i" (12UL)); [8949-8950] [2023-12-02 20:02:45,908 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/3533/dscv_tempdir/dscv/ri/43_2a/drivers/scsi/scsi_debug.c"), "i" (3232), "i" (12UL)); [9626-9627] [2023-12-02 20:02:45,909 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/3533/dscv_tempdir/dscv/ri/43_2a/drivers/scsi/scsi_debug.c"), "i" (3249), "i" (12UL)); [9651-9652] [2023-12-02 20:02:45,909 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/3533/dscv_tempdir/dscv/ri/43_2a/drivers/scsi/scsi_debug.c"), "i" (3250), "i" (12UL)); [9660-9661] [2023-12-02 20:02:46,057 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_3d187e38-950e-4837-8881-595d34158001/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i[422408,422421] [2023-12-02 20:02:46,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:02:46,382 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 20:02:46,383 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 20:02:46,383 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 20:02:46,391 INFO L206 MainTranslator]: Completed translation [2023-12-02 20:02:46,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:02:46 WrapperNode [2023-12-02 20:02:46,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 20:02:46,393 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 20:02:46,393 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 20:02:46,393 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 20:02:46,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:02:46" (1/1) ... [2023-12-02 20:02:46,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:02:46" (1/1) ... [2023-12-02 20:02:46,974 INFO L138 Inliner]: procedures = 367, calls = 6061, calls flagged for inlining = 163, calls inlined = 161, statements flattened = 13747 [2023-12-02 20:02:46,976 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 20:02:46,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 20:02:46,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 20:02:46,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 20:02:46,988 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:02:46" (1/1) ... [2023-12-02 20:02:46,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:02:46" (1/1) ... [2023-12-02 20:02:47,044 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:02:46" (1/1) ... [2023-12-02 20:02:47,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:02:46" (1/1) ... [2023-12-02 20:02:47,250 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:02:46" (1/1) ... [2023-12-02 20:02:47,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:02:46" (1/1) ... [2023-12-02 20:02:47,316 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:02:46" (1/1) ... [2023-12-02 20:02:47,339 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:02:46" (1/1) ... [2023-12-02 20:02:47,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 20:02:47,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 20:02:47,440 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 20:02:47,440 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 20:02:47,441 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:02:46" (1/1) ... [2023-12-02 20:02:47,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:02:47,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 20:02:47,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 20:02:47,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 20:02:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-12-02 20:02:47,558 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-12-02 20:02:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2023-12-02 20:02:47,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2023-12-02 20:02:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure map_index_to_lba [2023-12-02 20:02:47,559 INFO L138 BoogieDeclarations]: Found implementation of procedure map_index_to_lba [2023-12-02 20:02:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure sector_size_show [2023-12-02 20:02:47,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sector_size_show [2023-12-02 20:02:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 20:02:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 20:02:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 20:02:47,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 20:02:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure dif_show [2023-12-02 20:02:47,563 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_show [2023-12-02 20:02:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 20:02:47,563 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 20:02:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure stop_all_queued [2023-12-02 20:02:47,563 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_all_queued [2023-12-02 20:02:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_remove_adapter [2023-12-02 20:02:47,564 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_remove_adapter [2023-12-02 20:02:47,564 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_lbp [2023-12-02 20:02:47,564 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_lbp [2023-12-02 20:02:47,564 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_queuecommand_lock_or_not [2023-12-02 20:02:47,564 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_queuecommand_lock_or_not [2023-12-02 20:02:47,564 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2023-12-02 20:02:47,564 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2023-12-02 20:02:47,564 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_host_reset [2023-12-02 20:02:47,564 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_host_reset [2023-12-02 20:02:47,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-12-02 20:02:47,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-12-02 20:02:47,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 20:02:47,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 20:02:47,565 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2023-12-02 20:02:47,565 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2023-12-02 20:02:47,565 INFO L130 BoogieDeclarations]: Found specification of procedure seq_printf [2023-12-02 20:02:47,565 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_printf [2023-12-02 20:02:47,566 INFO L130 BoogieDeclarations]: Found specification of procedure dev_size_mb_show [2023-12-02 20:02:47,566 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_size_mb_show [2023-12-02 20:02:47,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 20:02:47,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 20:02:47,567 INFO L130 BoogieDeclarations]: Found specification of procedure num_parts_show [2023-12-02 20:02:47,567 INFO L138 BoogieDeclarations]: Found implementation of procedure num_parts_show [2023-12-02 20:02:47,568 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_level_show [2023-12-02 20:02:47,568 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_level_show [2023-12-02 20:02:47,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2023-12-02 20:02:47,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2023-12-02 20:02:47,568 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2023-12-02 20:02:47,568 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2023-12-02 20:02:47,568 INFO L130 BoogieDeclarations]: Found specification of procedure fill_from_dev_buffer [2023-12-02 20:02:47,568 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_from_dev_buffer [2023-12-02 20:02:47,568 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_slave_destroy [2023-12-02 20:02:47,568 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_slave_destroy [2023-12-02 20:02:47,569 INFO L130 BoogieDeclarations]: Found specification of procedure map_region [2023-12-02 20:02:47,569 INFO L138 BoogieDeclarations]: Found implementation of procedure map_region [2023-12-02 20:02:47,569 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-12-02 20:02:47,569 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-12-02 20:02:47,569 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-12-02 20:02:47,569 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-12-02 20:02:47,569 INFO L130 BoogieDeclarations]: Found specification of procedure fetch_to_dev_buffer [2023-12-02 20:02:47,569 INFO L138 BoogieDeclarations]: Found implementation of procedure fetch_to_dev_buffer [2023-12-02 20:02:47,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 20:02:47,569 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 20:02:47,570 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_set_guard [2023-12-02 20:02:47,570 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_set_guard [2023-12-02 20:02:47,570 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 20:02:47,570 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 20:02:47,571 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_info [2023-12-02 20:02:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_info [2023-12-02 20:02:47,571 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sglist [2023-12-02 20:02:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sglist [2023-12-02 20:02:47,571 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_abort [2023-12-02 20:02:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_abort [2023-12-02 20:02:47,571 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2023-12-02 20:02:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2023-12-02 20:02:47,571 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_resp [2023-12-02 20:02:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_resp [2023-12-02 20:02:47,572 INFO L130 BoogieDeclarations]: Found specification of procedure pseudo_lld_bus_match [2023-12-02 20:02:47,572 INFO L138 BoogieDeclarations]: Found implementation of procedure pseudo_lld_bus_match [2023-12-02 20:02:47,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 20:02:47,572 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-12-02 20:02:47,572 INFO L130 BoogieDeclarations]: Found specification of procedure host_lock_show [2023-12-02 20:02:47,572 INFO L138 BoogieDeclarations]: Found implementation of procedure host_lock_show [2023-12-02 20:02:47,572 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 20:02:47,572 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_bus_reset [2023-12-02 20:02:47,572 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_bus_reset [2023-12-02 20:02:47,573 INFO L130 BoogieDeclarations]: Found specification of procedure no_lun_0_show [2023-12-02 20:02:47,573 INFO L138 BoogieDeclarations]: Found implementation of procedure no_lun_0_show [2023-12-02 20:02:47,573 INFO L130 BoogieDeclarations]: Found specification of procedure dif_copy_prot [2023-12-02 20:02:47,574 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_copy_prot [2023-12-02 20:02:47,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 20:02:47,574 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be64 [2023-12-02 20:02:47,574 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be64 [2023-12-02 20:02:47,574 INFO L130 BoogieDeclarations]: Found specification of procedure resp_err_recov_pg [2023-12-02 20:02:47,575 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_err_recov_pg [2023-12-02 20:02:47,575 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-12-02 20:02:47,575 INFO L130 BoogieDeclarations]: Found specification of procedure map_show [2023-12-02 20:02:47,575 INFO L138 BoogieDeclarations]: Found implementation of procedure map_show [2023-12-02 20:02:47,575 INFO L130 BoogieDeclarations]: Found specification of procedure no_uld_show [2023-12-02 20:02:47,575 INFO L138 BoogieDeclarations]: Found implementation of procedure no_uld_show [2023-12-02 20:02:47,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-12-02 20:02:47,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-12-02 20:02:47,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 20:02:47,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 20:02:47,576 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 20:02:47,576 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 20:02:47,576 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_build_sense_buffer [2023-12-02 20:02:47,576 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_build_sense_buffer [2023-12-02 20:02:47,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 20:02:47,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 20:02:47,577 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 20:02:47,577 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 20:02:47,577 INFO L130 BoogieDeclarations]: Found specification of procedure removable_show [2023-12-02 20:02:47,577 INFO L138 BoogieDeclarations]: Found implementation of procedure removable_show [2023-12-02 20:02:47,577 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-12-02 20:02:47,577 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-12-02 20:02:47,577 INFO L130 BoogieDeclarations]: Found specification of procedure num_tgts_show [2023-12-02 20:02:47,578 INFO L138 BoogieDeclarations]: Found implementation of procedure num_tgts_show [2023-12-02 20:02:47,578 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_device_create [2023-12-02 20:02:47,578 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_device_create [2023-12-02 20:02:47,578 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-12-02 20:02:47,578 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-12-02 20:02:47,578 INFO L130 BoogieDeclarations]: Found specification of procedure resp_sas_pcd_m_spg [2023-12-02 20:02:47,578 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_sas_pcd_m_spg [2023-12-02 20:02:47,578 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 20:02:47,579 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 20:02:47,579 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-12-02 20:02:47,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-12-02 20:02:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure find_last_bit [2023-12-02 20:02:47,582 INFO L138 BoogieDeclarations]: Found implementation of procedure find_last_bit [2023-12-02 20:02:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_ioctl [2023-12-02 20:02:47,582 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_ioctl [2023-12-02 20:02:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure max_queue_show [2023-12-02 20:02:47,582 INFO L138 BoogieDeclarations]: Found implementation of procedure max_queue_show [2023-12-02 20:02:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_next [2023-12-02 20:02:47,582 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_next [2023-12-02 20:02:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-12-02 20:02:47,583 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-12-02 20:02:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure check_device_access_params [2023-12-02 20:02:47,583 INFO L138 BoogieDeclarations]: Found implementation of procedure check_device_access_params [2023-12-02 20:02:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_priv [2023-12-02 20:02:47,583 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_priv [2023-12-02 20:02:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 20:02:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_start [2023-12-02 20:02:47,583 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_start [2023-12-02 20:02:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure strict_show [2023-12-02 20:02:47,583 INFO L138 BoogieDeclarations]: Found implementation of procedure strict_show [2023-12-02 20:02:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure dif_verify [2023-12-02 20:02:47,584 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_verify [2023-12-02 20:02:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure resp_sas_sf_m_pg [2023-12-02 20:02:47,584 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_sas_sf_m_pg [2023-12-02 20:02:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2023-12-02 20:02:47,584 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2023-12-02 20:02:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2023-12-02 20:02:47,584 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2023-12-02 20:02:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure resp_read_dt0 [2023-12-02 20:02:47,584 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_read_dt0 [2023-12-02 20:02:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 20:02:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure resp_disconnect_pg [2023-12-02 20:02:47,585 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_disconnect_pg [2023-12-02 20:02:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2023-12-02 20:02:47,585 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2023-12-02 20:02:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure dsense_show [2023-12-02 20:02:47,585 INFO L138 BoogieDeclarations]: Found implementation of procedure dsense_show [2023-12-02 20:02:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 20:02:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure resp_format_pg [2023-12-02 20:02:47,585 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_format_pg [2023-12-02 20:02:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2023-12-02 20:02:47,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2023-12-02 20:02:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure lba_to_map_index [2023-12-02 20:02:47,586 INFO L138 BoogieDeclarations]: Found implementation of procedure lba_to_map_index [2023-12-02 20:02:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_prot_sglist [2023-12-02 20:02:47,586 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_prot_sglist [2023-12-02 20:02:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2023-12-02 20:02:47,586 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2023-12-02 20:02:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure resp_write_same [2023-12-02 20:02:47,586 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_write_same [2023-12-02 20:02:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 20:02:47,586 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 20:02:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2023-12-02 20:02:47,587 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2023-12-02 20:02:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure ndelay_show [2023-12-02 20:02:47,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ndelay_show [2023-12-02 20:02:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be64 [2023-12-02 20:02:47,587 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be64 [2023-12-02 20:02:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure resp_caching_pg [2023-12-02 20:02:47,587 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_caching_pg [2023-12-02 20:02:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 20:02:47,587 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 20:02:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_queuecommand [2023-12-02 20:02:47,587 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_queuecommand [2023-12-02 20:02:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2023-12-02 20:02:47,588 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2023-12-02 20:02:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-12-02 20:02:47,588 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-12-02 20:02:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_slave_alloc [2023-12-02 20:02:47,588 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_slave_alloc [2023-12-02 20:02:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure resp_iec_m_pg [2023-12-02 20:02:47,588 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_iec_m_pg [2023-12-02 20:02:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 20:02:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure resp_write_dt0 [2023-12-02 20:02:47,588 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_write_dt0 [2023-12-02 20:02:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_change_qdepth [2023-12-02 20:02:47,589 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_change_qdepth [2023-12-02 20:02:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_irqrestore [2023-12-02 20:02:47,589 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_irqrestore [2023-12-02 20:02:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 20:02:47,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 20:02:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_show_info [2023-12-02 20:02:47,589 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_show_info [2023-12-02 20:02:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure ptype_show [2023-12-02 20:02:47,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ptype_show [2023-12-02 20:02:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-12-02 20:02:47,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-12-02 20:02:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure root_device_unregister [2023-12-02 20:02:47,590 INFO L138 BoogieDeclarations]: Found implementation of procedure root_device_unregister [2023-12-02 20:02:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 20:02:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure unmap_region [2023-12-02 20:02:47,590 INFO L138 BoogieDeclarations]: Found implementation of procedure unmap_region [2023-12-02 20:02:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure fake_rw_show [2023-12-02 20:02:47,590 INFO L138 BoogieDeclarations]: Found implementation of procedure fake_rw_show [2023-12-02 20:02:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2023-12-02 20:02:47,590 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2023-12-02 20:02:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-12-02 20:02:47,590 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-12-02 20:02:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-12-02 20:02:47,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-12-02 20:02:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure mk_sense_invalid_fld [2023-12-02 20:02:47,591 INFO L138 BoogieDeclarations]: Found implementation of procedure mk_sense_invalid_fld [2023-12-02 20:02:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sg_count [2023-12-02 20:02:47,591 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sg_count [2023-12-02 20:02:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 20:02:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure max_luns_show [2023-12-02 20:02:47,591 INFO L138 BoogieDeclarations]: Found implementation of procedure max_luns_show [2023-12-02 20:02:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irqsave [2023-12-02 20:02:47,591 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irqsave [2023-12-02 20:02:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-12-02 20:02:47,592 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-12-02 20:02:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure hrtimer_cancel [2023-12-02 20:02:47,592 INFO L138 BoogieDeclarations]: Found implementation of procedure hrtimer_cancel [2023-12-02 20:02:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure opts_show [2023-12-02 20:02:47,592 INFO L138 BoogieDeclarations]: Found implementation of procedure opts_show [2023-12-02 20:02:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 20:02:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2023-12-02 20:02:47,592 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2023-12-02 20:02:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 20:02:47,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 20:02:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure devInfoReg [2023-12-02 20:02:47,593 INFO L138 BoogieDeclarations]: Found implementation of procedure devInfoReg [2023-12-02 20:02:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure guard_show [2023-12-02 20:02:47,593 INFO L138 BoogieDeclarations]: Found implementation of procedure guard_show [2023-12-02 20:02:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_device_reset [2023-12-02 20:02:47,593 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_device_reset [2023-12-02 20:02:47,594 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irqrestore [2023-12-02 20:02:47,598 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irqrestore [2023-12-02 20:02:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2023-12-02 20:02:47,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2023-12-02 20:02:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2023-12-02 20:02:47,598 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2023-12-02 20:02:47,599 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_max_tgts_luns [2023-12-02 20:02:47,599 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_max_tgts_luns [2023-12-02 20:02:47,599 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_slave_configure [2023-12-02 20:02:47,599 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_slave_configure [2023-12-02 20:02:47,599 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be32 [2023-12-02 20:02:47,603 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be32 [2023-12-02 20:02:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure sdev_prefix_printk [2023-12-02 20:02:47,603 INFO L138 BoogieDeclarations]: Found implementation of procedure sdev_prefix_printk [2023-12-02 20:02:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure scnprintf [2023-12-02 20:02:47,603 INFO L138 BoogieDeclarations]: Found implementation of procedure scnprintf [2023-12-02 20:02:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bidi_cmnd [2023-12-02 20:02:47,603 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bidi_cmnd [2023-12-02 20:02:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2023-12-02 20:02:47,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2023-12-02 20:02:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-12-02 20:02:47,603 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-12-02 20:02:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_stop [2023-12-02 20:02:47,604 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_stop [2023-12-02 20:02:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure do_device_access [2023-12-02 20:02:47,604 INFO L138 BoogieDeclarations]: Found implementation of procedure do_device_access [2023-12-02 20:02:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure virtual_gb_show [2023-12-02 20:02:47,604 INFO L138 BoogieDeclarations]: Found implementation of procedure virtual_gb_show [2023-12-02 20:02:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure vpd_use_hostno_show [2023-12-02 20:02:47,604 INFO L138 BoogieDeclarations]: Found implementation of procedure vpd_use_hostno_show [2023-12-02 20:02:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_target_reset [2023-12-02 20:02:47,604 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_target_reset [2023-12-02 20:02:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure dix_show [2023-12-02 20:02:47,605 INFO L138 BoogieDeclarations]: Found implementation of procedure dix_show [2023-12-02 20:02:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure every_nth_show [2023-12-02 20:02:47,605 INFO L138 BoogieDeclarations]: Found implementation of procedure every_nth_show [2023-12-02 20:02:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2023-12-02 20:02:47,605 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2023-12-02 20:02:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2023-12-02 20:02:47,605 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2023-12-02 20:02:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure clear_luns_changed_on_target [2023-12-02 20:02:47,605 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_luns_changed_on_target [2023-12-02 20:02:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_prot_sg_count [2023-12-02 20:02:47,605 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_prot_sg_count [2023-12-02 20:02:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure ato_show [2023-12-02 20:02:47,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ato_show [2023-12-02 20:02:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure mk_sense_buffer [2023-12-02 20:02:47,606 INFO L138 BoogieDeclarations]: Found implementation of procedure mk_sense_buffer [2023-12-02 20:02:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure resp_sas_sha_m_spg [2023-12-02 20:02:47,606 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_sas_sha_m_spg [2023-12-02 20:02:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-12-02 20:02:47,606 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-12-02 20:02:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure add_host_show [2023-12-02 20:02:47,606 INFO L138 BoogieDeclarations]: Found implementation of procedure add_host_show [2023-12-02 20:02:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_add_adapter [2023-12-02 20:02:47,606 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_add_adapter [2023-12-02 20:02:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sg_copy_to_buffer [2023-12-02 20:02:47,607 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sg_copy_to_buffer [2023-12-02 20:02:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-12-02 20:02:47,607 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-12-02 20:02:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure dif_store [2023-12-02 20:02:47,607 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_store [2023-12-02 20:02:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 20:02:47,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 20:02:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure mk_sense_invalid_opcode [2023-12-02 20:02:47,607 INFO L138 BoogieDeclarations]: Found implementation of procedure mk_sense_invalid_opcode [2023-12-02 20:02:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-12-02 20:02:47,607 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-12-02 20:02:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_buffer [2023-12-02 20:02:47,608 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_buffer [2023-12-02 20:02:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_set_resid [2023-12-02 20:02:47,608 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_set_resid [2023-12-02 20:02:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure shost_priv [2023-12-02 20:02:47,608 INFO L138 BoogieDeclarations]: Found implementation of procedure shost_priv [2023-12-02 20:02:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 20:02:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure delay_show [2023-12-02 20:02:47,608 INFO L138 BoogieDeclarations]: Found implementation of procedure delay_show [2023-12-02 20:02:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2023-12-02 20:02:47,608 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2023-12-02 20:02:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure get_sdebug_capacity [2023-12-02 20:02:47,609 INFO L138 BoogieDeclarations]: Found implementation of procedure get_sdebug_capacity [2023-12-02 20:02:47,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 20:02:47,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 20:02:47,609 INFO L130 BoogieDeclarations]: Found specification of procedure resp_ctrl_m_pg [2023-12-02 20:02:47,609 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_ctrl_m_pg [2023-12-02 20:02:47,609 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-12-02 20:02:47,609 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-12-02 20:02:48,847 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 20:02:48,853 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 20:02:49,934 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 20:03:29,502 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 20:03:33,232 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 20:03:33,233 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-02 20:03:33,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:03:33 BoogieIcfgContainer [2023-12-02 20:03:33,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 20:03:33,238 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 20:03:33,239 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 20:03:33,242 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 20:03:33,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:02:42" (1/3) ... [2023-12-02 20:03:33,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5613766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:03:33, skipping insertion in model container [2023-12-02 20:03:33,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:02:46" (2/3) ... [2023-12-02 20:03:33,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5613766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:03:33, skipping insertion in model container [2023-12-02 20:03:33,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:03:33" (3/3) ... [2023-12-02 20:03:33,244 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2023-12-02 20:03:33,261 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 20:03:33,261 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 20:03:33,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 20:03:33,377 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;@11795b4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:03:33,377 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 20:03:33,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 3105 states, 2007 states have (on average 1.4100647732934728) internal successors, (2830), 2095 states have internal predecessors, (2830), 937 states have call successors, (937), 160 states have call predecessors, (937), 159 states have return successors, (906), 894 states have call predecessors, (906), 906 states have call successors, (906) [2023-12-02 20:03:33,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2023-12-02 20:03:33,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:03:33,460 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:03:33,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:03:33,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:03:33,466 INFO L85 PathProgramCache]: Analyzing trace with hash 379524464, now seen corresponding path program 1 times [2023-12-02 20:03:33,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:03:33,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007510074] [2023-12-02 20:03:33,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:03:33,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:03:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:03:36,443 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-02 20:03:36,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:03:36,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007510074] [2023-12-02 20:03:36,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007510074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:03:36,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:03:36,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 20:03:36,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987092515] [2023-12-02 20:03:36,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:03:36,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:03:36,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:03:36,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:03:36,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:03:36,486 INFO L87 Difference]: Start difference. First operand has 3105 states, 2007 states have (on average 1.4100647732934728) internal successors, (2830), 2095 states have internal predecessors, (2830), 937 states have call successors, (937), 160 states have call predecessors, (937), 159 states have return successors, (906), 894 states have call predecessors, (906), 906 states have call successors, (906) Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-02 20:03:38,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:03:42,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:03:44,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:03:46,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:03:50,041 WARN L539 Checker$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 20:03:52,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:03:54,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:03:58,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:04:00,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:04:03,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:04:05,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:04:07,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:04:10,452 WARN L539 Checker$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 20:04:12,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:04:15,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:04:17,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:04:19,925 WARN L539 Checker$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 20:04:20,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:04:20,109 INFO L93 Difference]: Finished difference Result 8947 states and 13545 transitions. [2023-12-02 20:04:20,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:04:20,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 907 [2023-12-02 20:04:20,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:04:20,178 INFO L225 Difference]: With dead ends: 8947 [2023-12-02 20:04:20,178 INFO L226 Difference]: Without dead ends: 5882 [2023-12-02 20:04:20,201 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 20:04:20,204 INFO L413 NwaCegarLoop]: 4280 mSDtfsCounter, 4578 mSDsluCounter, 4037 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 2 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 8317 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.1s IncrementalHoareTripleChecker+Time [2023-12-02 20:04:20,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 8317 Invalid, 788 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 771 Invalid, 15 Unknown, 0 Unchecked, 43.1s Time] [2023-12-02 20:04:20,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5882 states. [2023-12-02 20:04:20,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5882 to 5877. [2023-12-02 20:04:20,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5877 states, 3866 states have (on average 1.400672529746508) internal successors, (5415), 3974 states have internal predecessors, (5415), 1695 states have call successors, (1695), 316 states have call predecessors, (1695), 315 states have return successors, (1693), 1668 states have call predecessors, (1693), 1693 states have call successors, (1693) [2023-12-02 20:04:20,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5877 states to 5877 states and 8803 transitions. [2023-12-02 20:04:20,634 INFO L78 Accepts]: Start accepts. Automaton has 5877 states and 8803 transitions. Word has length 907 [2023-12-02 20:04:20,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:04:20,638 INFO L495 AbstractCegarLoop]: Abstraction has 5877 states and 8803 transitions. [2023-12-02 20:04:20,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-02 20:04:20,638 INFO L276 IsEmpty]: Start isEmpty. Operand 5877 states and 8803 transitions. [2023-12-02 20:04:20,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2023-12-02 20:04:20,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:04:20,726 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:04:20,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 20:04:20,727 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:04:20,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:04:20,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1827114261, now seen corresponding path program 1 times [2023-12-02 20:04:20,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:04:20,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405320422] [2023-12-02 20:04:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:04:20,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:04:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:04:22,645 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-02 20:04:22,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:04:22,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405320422] [2023-12-02 20:04:22,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405320422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:04:22,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:04:22,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 20:04:22,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815386265] [2023-12-02 20:04:22,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:04:22,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:04:22,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:04:22,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:04:22,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:04:22,651 INFO L87 Difference]: Start difference. First operand 5877 states and 8803 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-02 20:04:24,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:04:28,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:04:30,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:04:32,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:04:36,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:04:39,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:04:43,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:04:45,419 WARN L539 Checker$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 20:04:46,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:04:48,866 WARN L539 Checker$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 20:04:51,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:04:53,037 WARN L539 Checker$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 20:04:55,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:04:57,374 WARN L539 Checker$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 20:04:59,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:05:01,403 WARN L539 Checker$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 20:05:03,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:05:05,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:05:07,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:05:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:05:08,026 INFO L93 Difference]: Finished difference Result 17222 states and 25797 transitions. [2023-12-02 20:05:08,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:05:08,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 914 [2023-12-02 20:05:08,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:05:08,112 INFO L225 Difference]: With dead ends: 17222 [2023-12-02 20:05:08,112 INFO L226 Difference]: Without dead ends: 11506 [2023-12-02 20:05:08,142 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 20:05:08,143 INFO L413 NwaCegarLoop]: 4211 mSDtfsCounter, 4447 mSDsluCounter, 3928 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 2 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4447 SdHoareTripleChecker+Valid, 8139 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.8s IncrementalHoareTripleChecker+Time [2023-12-02 20:05:08,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4447 Valid, 8139 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 764 Invalid, 17 Unknown, 0 Unchecked, 44.8s Time] [2023-12-02 20:05:08,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11506 states. [2023-12-02 20:05:08,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11506 to 11500. [2023-12-02 20:05:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11500 states, 7592 states have (on average 1.4051633298208641) internal successors, (10668), 7806 states have internal predecessors, (10668), 3280 states have call successors, (3280), 628 states have call predecessors, (3280), 627 states have return successors, (3278), 3227 states have call predecessors, (3278), 3278 states have call successors, (3278) [2023-12-02 20:05:08,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11500 states to 11500 states and 17226 transitions. [2023-12-02 20:05:08,756 INFO L78 Accepts]: Start accepts. Automaton has 11500 states and 17226 transitions. Word has length 914 [2023-12-02 20:05:08,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:05:08,758 INFO L495 AbstractCegarLoop]: Abstraction has 11500 states and 17226 transitions. [2023-12-02 20:05:08,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-02 20:05:08,759 INFO L276 IsEmpty]: Start isEmpty. Operand 11500 states and 17226 transitions. [2023-12-02 20:05:08,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2023-12-02 20:05:08,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:05:08,773 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:08,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 20:05:08,773 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:05:08,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:05:08,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1064676802, now seen corresponding path program 1 times [2023-12-02 20:05:08,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:05:08,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725873197] [2023-12-02 20:05:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:05:08,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:05:09,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 20:05:09,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991612202] [2023-12-02 20:05:09,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:05:09,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:05:09,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 20:05:09,552 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:05:09,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 20:05:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:05:12,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 14055 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 20:05:12,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:05:18,288 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2023-12-02 20:05:18,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:05:18,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:05:18,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725873197] [2023-12-02 20:05:18,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 20:05:18,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991612202] [2023-12-02 20:05:18,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991612202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:05:18,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:05:18,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 20:05:18,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910815777] [2023-12-02 20:05:18,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:05:18,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:05:18,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:05:18,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:05:18,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:05:18,292 INFO L87 Difference]: Start difference. First operand 11500 states and 17226 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-02 20:05:20,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:05:24,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:05:26,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:05:28,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:05:31,250 WARN L539 Checker$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 20:05:33,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:05:34,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:05:38,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:05:40,413 WARN L539 Checker$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 20:05:43,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:05:45,277 WARN L539 Checker$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 20:05:48,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:05:50,048 WARN L539 Checker$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 20:05:52,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:05:56,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:05:58,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:05:59,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:05:59,094 INFO L93 Difference]: Finished difference Result 18457 states and 27383 transitions. [2023-12-02 20:05:59,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:05:59,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 919 [2023-12-02 20:05:59,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:05:59,205 INFO L225 Difference]: With dead ends: 18457 [2023-12-02 20:05:59,206 INFO L226 Difference]: Without dead ends: 18454 [2023-12-02 20:05:59,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 917 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 20:05:59,215 INFO L413 NwaCegarLoop]: 4291 mSDtfsCounter, 4056 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 1 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4056 SdHoareTripleChecker+Valid, 6762 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.3s IncrementalHoareTripleChecker+Time [2023-12-02 20:05:59,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4056 Valid, 6762 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 663 Invalid, 14 Unknown, 0 Unchecked, 40.3s Time] [2023-12-02 20:05:59,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18454 states. [2023-12-02 20:06:00,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18454 to 18395. [2023-12-02 20:06:00,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18395 states, 11918 states have (on average 1.3846282933378085) internal successors, (16502), 12219 states have internal predecessors, (16502), 5375 states have call successors, (5375), 1102 states have call predecessors, (5375), 1101 states have return successors, (5410), 5291 states have call predecessors, (5410), 5374 states have call successors, (5410) [2023-12-02 20:06:00,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18395 states to 18395 states and 27287 transitions. [2023-12-02 20:06:00,287 INFO L78 Accepts]: Start accepts. Automaton has 18395 states and 27287 transitions. Word has length 919 [2023-12-02 20:06:00,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:06:00,289 INFO L495 AbstractCegarLoop]: Abstraction has 18395 states and 27287 transitions. [2023-12-02 20:06:00,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-02 20:06:00,289 INFO L276 IsEmpty]: Start isEmpty. Operand 18395 states and 27287 transitions. [2023-12-02 20:06:00,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2023-12-02 20:06:00,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:06:00,303 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:00,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 20:06:00,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:06:00,504 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:06:00,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:06:00,505 INFO L85 PathProgramCache]: Analyzing trace with hash -138110952, now seen corresponding path program 1 times [2023-12-02 20:06:00,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:06:00,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438594209] [2023-12-02 20:06:00,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:06:00,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:06:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:06:02,064 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-02 20:06:02,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:06:02,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438594209] [2023-12-02 20:06:02,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438594209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:06:02,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:06:02,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 20:06:02,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163384402] [2023-12-02 20:06:02,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:06:02,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:06:02,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:06:02,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:06:02,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:06:02,068 INFO L87 Difference]: Start difference. First operand 18395 states and 27287 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2023-12-02 20:06:04,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:06:09,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:06:11,679 WARN L539 Checker$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 20:06:13,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:06:14,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:06:16,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:06:18,244 WARN L539 Checker$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 20:06:21,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 20:06:24,751 WARN L539 Checker$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 20:06:26,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:06:28,779 WARN L539 Checker$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 20:06:30,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 20:06:32,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:06:35,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:06:37,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:06:37,093 INFO L93 Difference]: Finished difference Result 40259 states and 59563 transitions. [2023-12-02 20:06:37,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:06:37,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) Word has length 923 [2023-12-02 20:06:37,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:06:37,175 INFO L225 Difference]: With dead ends: 40259 [2023-12-02 20:06:37,175 INFO L226 Difference]: Without dead ends: 22025 [2023-12-02 20:06:37,258 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 20:06:37,259 INFO L413 NwaCegarLoop]: 4213 mSDtfsCounter, 1599 mSDsluCounter, 3839 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 4 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1599 SdHoareTripleChecker+Valid, 8052 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.4s IncrementalHoareTripleChecker+Time [2023-12-02 20:06:37,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1599 Valid, 8052 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 850 Invalid, 12 Unknown, 0 Unchecked, 34.4s Time] [2023-12-02 20:06:37,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22025 states. [2023-12-02 20:06:38,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22025 to 22022. [2023-12-02 20:06:38,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22022 states, 14454 states have (on average 1.3935242839352429) internal successors, (20142), 14840 states have internal predecessors, (20142), 6166 states have call successors, (6166), 1402 states have call predecessors, (6166), 1401 states have return successors, (6201), 6063 states have call predecessors, (6201), 6165 states have call successors, (6201) [2023-12-02 20:06:38,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22022 states to 22022 states and 32509 transitions. [2023-12-02 20:06:38,260 INFO L78 Accepts]: Start accepts. Automaton has 22022 states and 32509 transitions. Word has length 923 [2023-12-02 20:06:38,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:06:38,261 INFO L495 AbstractCegarLoop]: Abstraction has 22022 states and 32509 transitions. [2023-12-02 20:06:38,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2023-12-02 20:06:38,262 INFO L276 IsEmpty]: Start isEmpty. Operand 22022 states and 32509 transitions. [2023-12-02 20:06:38,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2023-12-02 20:06:38,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:06:38,273 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:38,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 20:06:38,273 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:06:38,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:06:38,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1757044197, now seen corresponding path program 1 times [2023-12-02 20:06:38,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:06:38,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886312402] [2023-12-02 20:06:38,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:06:38,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:06:38,992 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 20:06:38,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866661299] [2023-12-02 20:06:38,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:06:38,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:06:38,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 20:06:38,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:06:39,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 20:06:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:06:42,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 14204 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 20:06:42,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:06:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2023-12-02 20:06:48,132 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:06:48,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:06:48,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886312402] [2023-12-02 20:06:48,132 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 20:06:48,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866661299] [2023-12-02 20:06:48,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866661299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:06:48,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:06:48,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 20:06:48,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987253948] [2023-12-02 20:06:48,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:06:48,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:06:48,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:06:48,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:06:48,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:06:48,136 INFO L87 Difference]: Start difference. First operand 22022 states and 32509 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 2 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2023-12-02 20:06:50,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:06:54,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:06:55,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:06:57,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:06:59,827 WARN L539 Checker$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 20:07:02,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:07:04,749 WARN L539 Checker$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 20:07:06,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:07:11,419 WARN L539 Checker$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 20:07:13,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:07:14,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:07:17,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:07:19,070 WARN L539 Checker$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 20:07:22,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:07:24,826 WARN L539 Checker$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 20:07:26,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:07:28,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:07:30,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:07:30,530 INFO L93 Difference]: Finished difference Result 65600 states and 96817 transitions. [2023-12-02 20:07:30,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:07:30,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 2 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 947 [2023-12-02 20:07:30,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:07:30,694 INFO L225 Difference]: With dead ends: 65600 [2023-12-02 20:07:30,694 INFO L226 Difference]: Without dead ends: 43739 [2023-12-02 20:07:30,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 946 GetRequests, 945 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 20:07:30,752 INFO L413 NwaCegarLoop]: 4166 mSDtfsCounter, 4267 mSDsluCounter, 3902 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 2 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4267 SdHoareTripleChecker+Valid, 8068 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.2s IncrementalHoareTripleChecker+Time [2023-12-02 20:07:30,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4267 Valid, 8068 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 763 Invalid, 15 Unknown, 0 Unchecked, 41.2s Time] [2023-12-02 20:07:30,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43739 states. [2023-12-02 20:07:32,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43739 to 43728. [2023-12-02 20:07:32,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43728 states, 28714 states have (on average 1.3942327784356063) internal successors, (40034), 29490 states have internal predecessors, (40034), 12212 states have call successors, (12212), 2802 states have call predecessors, (12212), 2801 states have return successors, (12283), 12003 states have call predecessors, (12283), 12211 states have call successors, (12283) [2023-12-02 20:07:32,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43728 states to 43728 states and 64529 transitions. [2023-12-02 20:07:32,895 INFO L78 Accepts]: Start accepts. Automaton has 43728 states and 64529 transitions. Word has length 947 [2023-12-02 20:07:32,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:07:32,896 INFO L495 AbstractCegarLoop]: Abstraction has 43728 states and 64529 transitions. [2023-12-02 20:07:32,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 2 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2023-12-02 20:07:32,897 INFO L276 IsEmpty]: Start isEmpty. Operand 43728 states and 64529 transitions. [2023-12-02 20:07:32,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2023-12-02 20:07:32,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:07:32,909 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 21, 21, 20, 20, 20, 20, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:32,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 20:07:33,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:07:33,110 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:07:33,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:07:33,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2117023930, now seen corresponding path program 1 times [2023-12-02 20:07:33,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:07:33,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440376188] [2023-12-02 20:07:33,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:07:33,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:07:33,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 20:07:33,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956968024] [2023-12-02 20:07:33,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:07:33,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:07:33,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 20:07:33,894 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:07:33,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 20:07:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:07:37,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 14276 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 20:07:37,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:07:42,820 INFO L134 CoverageAnalysis]: Checked inductivity of 17930 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17930 trivial. 0 not checked. [2023-12-02 20:07:42,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:07:42,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:07:42,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440376188] [2023-12-02 20:07:42,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 20:07:42,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956968024] [2023-12-02 20:07:42,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956968024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:07:42,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:07:42,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 20:07:42,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446746631] [2023-12-02 20:07:42,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:07:42,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 20:07:42,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:07:42,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 20:07:42,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 20:07:42,824 INFO L87 Difference]: Start difference. First operand 43728 states and 64529 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-02 20:07:45,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:07:47,040 WARN L539 Checker$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 20:07:53,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:07:55,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:07:57,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:07:59,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:01,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:03,335 WARN L539 Checker$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 20:08:06,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:08,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:10,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:12,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:15,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 20:08:17,519 WARN L539 Checker$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 20:08:20,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:22,503 WARN L539 Checker$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 20:08:24,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:27,791 WARN L539 Checker$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 20:08:29,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:32,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:34,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:36,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:38,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:40,096 WARN L539 Checker$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 20:08:42,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:45,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:47,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:49,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:50,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:08:50,570 INFO L93 Difference]: Finished difference Result 43843 states and 64707 transitions. [2023-12-02 20:08:50,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:08:50,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 964 [2023-12-02 20:08:50,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:08:50,722 INFO L225 Difference]: With dead ends: 43843 [2023-12-02 20:08:50,722 INFO L226 Difference]: Without dead ends: 43840 [2023-12-02 20:08:50,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 961 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 20:08:50,824 INFO L413 NwaCegarLoop]: 4238 mSDtfsCounter, 4014 mSDsluCounter, 6707 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 1 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4014 SdHoareTripleChecker+Valid, 10945 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.6s IncrementalHoareTripleChecker+Time [2023-12-02 20:08:50,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4014 Valid, 10945 Invalid, 1086 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1059 Invalid, 26 Unknown, 0 Unchecked, 66.6s Time] [2023-12-02 20:08:50,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43840 states. [2023-12-02 20:08:52,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43840 to 43728. [2023-12-02 20:08:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43728 states, 28714 states have (on average 1.3936755589607857) internal successors, (40018), 29490 states have internal predecessors, (40018), 12212 states have call successors, (12212), 2802 states have call predecessors, (12212), 2801 states have return successors, (12283), 12003 states have call predecessors, (12283), 12211 states have call successors, (12283) [2023-12-02 20:08:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43728 states to 43728 states and 64513 transitions. [2023-12-02 20:08:52,516 INFO L78 Accepts]: Start accepts. Automaton has 43728 states and 64513 transitions. Word has length 964 [2023-12-02 20:08:52,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:08:52,517 INFO L495 AbstractCegarLoop]: Abstraction has 43728 states and 64513 transitions. [2023-12-02 20:08:52,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-02 20:08:52,517 INFO L276 IsEmpty]: Start isEmpty. Operand 43728 states and 64513 transitions. [2023-12-02 20:08:52,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2023-12-02 20:08:52,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:08:52,539 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 59, 59, 59, 59, 59, 59, 20, 20, 20, 20, 20, 20, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:08:52,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 20:08:52,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 20:08:52,740 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:08:52,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:08:52,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1820661544, now seen corresponding path program 1 times [2023-12-02 20:08:52,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:08:52,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714980396] [2023-12-02 20:08:52,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:08:52,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:08:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:08:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 18459 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18452 trivial. 0 not checked. [2023-12-02 20:08:54,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:08:54,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714980396] [2023-12-02 20:08:54,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714980396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:08:54,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:08:54,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 20:08:54,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530315942] [2023-12-02 20:08:54,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:08:54,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:08:54,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:08:54,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:08:54,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:08:54,774 INFO L87 Difference]: Start difference. First operand 43728 states and 64513 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2023-12-02 20:08:56,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:59,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 20:09:06,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:08,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:10,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:12,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:15,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:16,205 WARN L539 Checker$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 20:09:18,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:20,329 WARN L539 Checker$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 20:09:22,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:25,127 WARN L539 Checker$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 20:09:31,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:33,164 WARN L539 Checker$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 20:09:35,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:37,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:39,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:42,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:44,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:09:44,078 INFO L93 Difference]: Finished difference Result 130030 states and 191829 transitions. [2023-12-02 20:09:44,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:09:44,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) Word has length 998 [2023-12-02 20:09:44,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:09:44,398 INFO L225 Difference]: With dead ends: 130030 [2023-12-02 20:09:44,399 INFO L226 Difference]: Without dead ends: 86463 [2023-12-02 20:09:44,590 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 20:09:44,591 INFO L413 NwaCegarLoop]: 6798 mSDtfsCounter, 4451 mSDsluCounter, 3922 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 2 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4451 SdHoareTripleChecker+Valid, 10720 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.9s IncrementalHoareTripleChecker+Time [2023-12-02 20:09:44,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4451 Valid, 10720 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1018 Invalid, 15 Unknown, 0 Unchecked, 46.9s Time] [2023-12-02 20:09:44,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86463 states. [2023-12-02 20:09:47,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86463 to 86456. [2023-12-02 20:09:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86456 states, 56790 states have (on average 1.3940130304631098) internal successors, (79166), 58298 states have internal predecessors, (79166), 24112 states have call successors, (24112), 5554 states have call predecessors, (24112), 5553 states have return successors, (24255), 23707 states have call predecessors, (24255), 24111 states have call successors, (24255) [2023-12-02 20:09:48,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86456 states to 86456 states and 127533 transitions. [2023-12-02 20:09:48,056 INFO L78 Accepts]: Start accepts. Automaton has 86456 states and 127533 transitions. Word has length 998 [2023-12-02 20:09:48,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:09:48,058 INFO L495 AbstractCegarLoop]: Abstraction has 86456 states and 127533 transitions. [2023-12-02 20:09:48,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2023-12-02 20:09:48,058 INFO L276 IsEmpty]: Start isEmpty. Operand 86456 states and 127533 transitions. [2023-12-02 20:09:48,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1249 [2023-12-02 20:09:48,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:09:48,182 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:48,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 20:09:48,182 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:09:48,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:09:48,183 INFO L85 PathProgramCache]: Analyzing trace with hash 218067939, now seen corresponding path program 1 times [2023-12-02 20:09:48,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:09:48,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208062944] [2023-12-02 20:09:48,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:09:48,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:09:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:09:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 30635 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30617 trivial. 0 not checked. [2023-12-02 20:09:50,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:09:50,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208062944] [2023-12-02 20:09:50,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208062944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:09:50,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:09:50,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 20:09:50,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785707347] [2023-12-02 20:09:50,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:09:50,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 20:09:50,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:09:50,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 20:09:50,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 20:09:50,994 INFO L87 Difference]: Start difference. First operand 86456 states and 127533 transitions. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 2 states have call successors, (119), 2 states have call predecessors, (119), 1 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2023-12-02 20:09:53,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:55,176 WARN L539 Checker$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 20:09:57,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:00,201 WARN L539 Checker$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 20:10:02,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 20:10:03,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 20:10:11,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:13,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:15,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:17,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:19,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:21,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:23,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:25,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:27,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:34,079 WARN L539 Checker$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 20:10:36,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:38,093 WARN L539 Checker$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 20:10:40,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:42,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:44,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:46,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:48,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:49,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:10:49,480 INFO L93 Difference]: Finished difference Result 172847 states and 254955 transitions. [2023-12-02 20:10:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:10:49,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 2 states have call successors, (119), 2 states have call predecessors, (119), 1 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) Word has length 1248 [2023-12-02 20:10:49,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:10:49,917 INFO L225 Difference]: With dead ends: 172847 [2023-12-02 20:10:49,918 INFO L226 Difference]: Without dead ends: 86008 [2023-12-02 20:10:50,103 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 20:10:50,103 INFO L413 NwaCegarLoop]: 4168 mSDtfsCounter, 3 mSDsluCounter, 8324 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 7 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12492 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.5s IncrementalHoareTripleChecker+Time [2023-12-02 20:10:50,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12492 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1147 Invalid, 19 Unknown, 0 Unchecked, 55.5s Time] [2023-12-02 20:10:50,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86008 states. [2023-12-02 20:10:53,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86008 to 86008. [2023-12-02 20:10:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86008 states, 56566 states have (on average 1.3916133366333132) internal successors, (78718), 58074 states have internal predecessors, (78718), 23888 states have call successors, (23888), 5554 states have call predecessors, (23888), 5553 states have return successors, (24031), 23483 states have call predecessors, (24031), 23887 states have call successors, (24031) [2023-12-02 20:10:53,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86008 states to 86008 states and 126637 transitions. [2023-12-02 20:10:53,426 INFO L78 Accepts]: Start accepts. Automaton has 86008 states and 126637 transitions. Word has length 1248 [2023-12-02 20:10:53,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:10:53,427 INFO L495 AbstractCegarLoop]: Abstraction has 86008 states and 126637 transitions. [2023-12-02 20:10:53,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 2 states have call successors, (119), 2 states have call predecessors, (119), 1 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2023-12-02 20:10:53,428 INFO L276 IsEmpty]: Start isEmpty. Operand 86008 states and 126637 transitions. [2023-12-02 20:10:53,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1271 [2023-12-02 20:10:53,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:10:53,493 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:53,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 20:10:53,493 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:10:53,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:10:53,494 INFO L85 PathProgramCache]: Analyzing trace with hash 217376979, now seen corresponding path program 1 times [2023-12-02 20:10:53,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:10:53,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553365151] [2023-12-02 20:10:53,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:10:53,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:10:54,118 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 20:10:54,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765297665] [2023-12-02 20:10:54,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:10:54,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:10:54,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 20:10:54,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:10:54,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 20:10:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:10:57,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 16212 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 20:10:57,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:10:58,289 INFO L134 CoverageAnalysis]: Checked inductivity of 30647 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 29853 trivial. 0 not checked. [2023-12-02 20:10:58,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:10:58,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:10:58,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553365151] [2023-12-02 20:10:58,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 20:10:58,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765297665] [2023-12-02 20:10:58,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765297665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:10:58,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:10:58,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 20:10:58,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598062383] [2023-12-02 20:10:58,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:10:58,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:10:58,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:10:58,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:10:58,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:10:58,293 INFO L87 Difference]: Start difference. First operand 86008 states and 126637 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 3 states have call successors, (124), 3 states have call predecessors, (124), 3 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2023-12-02 20:11:00,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:02,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 20:11:09,818 WARN L539 Checker$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 20:11:11,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:14,482 WARN L539 Checker$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 20:11:16,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:18,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:20,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:22,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:24,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:26,940 WARN L539 Checker$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 20:11:32,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 20:11:34,716 WARN L539 Checker$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 20:11:36,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:38,816 WARN L539 Checker$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 20:11:41,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:43,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:46,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:47,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:48,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:11:48,867 INFO L93 Difference]: Finished difference Result 242732 states and 357999 transitions. [2023-12-02 20:11:48,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:11:48,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 3 states have call successors, (124), 3 states have call predecessors, (124), 3 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) Word has length 1270 [2023-12-02 20:11:48,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:11:49,493 INFO L225 Difference]: With dead ends: 242732 [2023-12-02 20:11:49,493 INFO L226 Difference]: Without dead ends: 156885 [2023-12-02 20:11:49,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1269 GetRequests, 1268 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 20:11:49,704 INFO L413 NwaCegarLoop]: 4105 mSDtfsCounter, 4377 mSDsluCounter, 3772 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 47 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4377 SdHoareTripleChecker+Valid, 7877 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.0s IncrementalHoareTripleChecker+Time [2023-12-02 20:11:49,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4377 Valid, 7877 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 853 Invalid, 17 Unknown, 0 Unchecked, 46.0s Time] [2023-12-02 20:11:49,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156885 states. [2023-12-02 20:11:55,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156885 to 156882. [2023-12-02 20:11:55,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156882 states, 102752 states have (on average 1.3881968234194955) internal successors, (142640), 105406 states have internal predecessors, (142640), 44224 states have call successors, (44224), 9906 states have call predecessors, (44224), 9905 states have return successors, (44511), 43489 states have call predecessors, (44511), 44223 states have call successors, (44511) [2023-12-02 20:11:56,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156882 states to 156882 states and 231375 transitions. [2023-12-02 20:11:56,102 INFO L78 Accepts]: Start accepts. Automaton has 156882 states and 231375 transitions. Word has length 1270 [2023-12-02 20:11:56,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:11:56,103 INFO L495 AbstractCegarLoop]: Abstraction has 156882 states and 231375 transitions. [2023-12-02 20:11:56,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 3 states have call successors, (124), 3 states have call predecessors, (124), 3 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2023-12-02 20:11:56,104 INFO L276 IsEmpty]: Start isEmpty. Operand 156882 states and 231375 transitions. [2023-12-02 20:11:56,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1270 [2023-12-02 20:11:56,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:11:56,147 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:11:56,355 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forcibly destroying the process [2023-12-02 20:11:56,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 20:11:56,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:11:56,356 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:11:56,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:11:56,357 INFO L85 PathProgramCache]: Analyzing trace with hash -374444730, now seen corresponding path program 1 times [2023-12-02 20:11:56,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:11:56,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335544892] [2023-12-02 20:11:56,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:11:56,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:11:56,953 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 20:11:56,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487269827] [2023-12-02 20:11:56,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:11:56,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:11:56,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 20:11:56,954 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:11:56,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 20:12:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:12:00,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 16211 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 20:12:00,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:12:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 30647 backedges. 11052 proven. 0 refuted. 0 times theorem prover too weak. 19595 trivial. 0 not checked. [2023-12-02 20:12:00,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:12:00,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:12:00,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335544892] [2023-12-02 20:12:00,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 20:12:00,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487269827] [2023-12-02 20:12:00,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487269827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:12:00,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:12:00,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 20:12:00,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931943526] [2023-12-02 20:12:00,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:12:00,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 20:12:00,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:12:00,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 20:12:00,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 20:12:00,592 INFO L87 Difference]: Start difference. First operand 156882 states and 231375 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 2 states have call successors, (124), 2 states have call predecessors, (124), 2 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) [2023-12-02 20:12:02,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:04,749 WARN L539 Checker$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 20:12:06,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:09,779 WARN L539 Checker$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 20:12:11,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 20:12:13,789 WARN L539 Checker$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 20:12:22,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:24,186 WARN L539 Checker$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 20:12:26,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:28,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:30,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:32,138 WARN L539 Checker$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 20:12:34,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:36,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:38,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:45,487 WARN L539 Checker$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 20:12:47,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:49,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:51,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:53,995 WARN L539 Checker$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 20:12:55,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:57,468 WARN L539 Checker$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 20:12:59,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:12:59,141 INFO L93 Difference]: Finished difference Result 313675 states and 462607 transitions. [2023-12-02 20:12:59,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:59,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 2 states have call successors, (124), 2 states have call predecessors, (124), 2 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) Word has length 1269 [2023-12-02 20:12:59,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:12:59,705 INFO L225 Difference]: With dead ends: 313675 [2023-12-02 20:12:59,706 INFO L226 Difference]: Without dead ends: 156834 [2023-12-02 20:13:00,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1269 GetRequests, 1266 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 20:13:00,188 INFO L413 NwaCegarLoop]: 4140 mSDtfsCounter, 3 mSDsluCounter, 8275 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 1 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12415 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.4s IncrementalHoareTripleChecker+Time [2023-12-02 20:13:00,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12415 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1145 Invalid, 20 Unknown, 0 Unchecked, 53.4s Time] [2023-12-02 20:13:00,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156834 states. [2023-12-02 20:13:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156834 to 156834. [2023-12-02 20:13:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156834 states, 102728 states have (on average 1.3880538898839654) internal successors, (142592), 105382 states have internal predecessors, (142592), 44200 states have call successors, (44200), 9906 states have call predecessors, (44200), 9905 states have return successors, (44487), 43465 states have call predecessors, (44487), 44199 states have call successors, (44487) [2023-12-02 20:13:06,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156834 states to 156834 states and 231279 transitions. [2023-12-02 20:13:06,698 INFO L78 Accepts]: Start accepts. Automaton has 156834 states and 231279 transitions. Word has length 1269 [2023-12-02 20:13:06,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:13:06,699 INFO L495 AbstractCegarLoop]: Abstraction has 156834 states and 231279 transitions. [2023-12-02 20:13:06,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 2 states have call successors, (124), 2 states have call predecessors, (124), 2 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) [2023-12-02 20:13:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 156834 states and 231279 transitions. [2023-12-02 20:13:06,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1298 [2023-12-02 20:13:06,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:13:06,752 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 21, 21, 20, 20, 20, 20, 5, 5, 5, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:06,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 20:13:06,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 20:13:06,953 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:13:06,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:13:06,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1196099976, now seen corresponding path program 1 times [2023-12-02 20:13:06,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:13:06,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661326664] [2023-12-02 20:13:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:13:06,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:13:07,587 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 20:13:07,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896708075] [2023-12-02 20:13:07,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:13:07,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:13:07,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 20:13:07,588 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:13:07,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 20:13:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:13:11,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 16322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 20:13:11,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:13:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 30730 backedges. 11057 proven. 0 refuted. 0 times theorem prover too weak. 19673 trivial. 0 not checked. [2023-12-02 20:13:17,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:13:17,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:13:17,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661326664] [2023-12-02 20:13:17,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 20:13:17,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896708075] [2023-12-02 20:13:17,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896708075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:13:17,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:13:17,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 20:13:17,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169002813] [2023-12-02 20:13:17,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:13:17,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:13:17,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:13:17,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:13:17,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:13:17,393 INFO L87 Difference]: Start difference. First operand 156834 states and 231279 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 2 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-02 20:13:19,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:21,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 20:13:27,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:29,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:31,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:35,984 WARN L539 Checker$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 20:13:38,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:40,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:41,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:13:41,303 INFO L93 Difference]: Finished difference Result 302979 states and 447247 transitions. [2023-12-02 20:13:41,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:13:41,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 2 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) Word has length 1297 [2023-12-02 20:13:41,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:13:42,136 INFO L225 Difference]: With dead ends: 302979 [2023-12-02 20:13:42,137 INFO L226 Difference]: Without dead ends: 146306 [2023-12-02 20:13:42,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1296 GetRequests, 1295 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 20:13:42,533 INFO L413 NwaCegarLoop]: 3901 mSDtfsCounter, 3968 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3968 SdHoareTripleChecker+Valid, 3901 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2023-12-02 20:13:42,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3968 Valid, 3901 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 362 Invalid, 6 Unknown, 0 Unchecked, 18.6s Time] [2023-12-02 20:13:42,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146306 states. [2023-12-02 20:13:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146306 to 146306. [2023-12-02 20:13:48,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146306 states, 96408 states have (on average 1.3925815285038585) internal successors, (134256), 98934 states have internal predecessors, (134256), 40376 states have call successors, (40376), 9522 states have call predecessors, (40376), 9521 states have return successors, (40663), 39705 states have call predecessors, (40663), 40375 states have call successors, (40663) [2023-12-02 20:13:49,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146306 states to 146306 states and 215295 transitions. [2023-12-02 20:13:49,096 INFO L78 Accepts]: Start accepts. Automaton has 146306 states and 215295 transitions. Word has length 1297 [2023-12-02 20:13:49,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:13:49,097 INFO L495 AbstractCegarLoop]: Abstraction has 146306 states and 215295 transitions. [2023-12-02 20:13:49,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 2 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-02 20:13:49,097 INFO L276 IsEmpty]: Start isEmpty. Operand 146306 states and 215295 transitions. [2023-12-02 20:13:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1299 [2023-12-02 20:13:49,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:13:49,151 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 21, 21, 20, 20, 20, 20, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:49,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 20:13:49,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 20:13:49,352 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:13:49,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:13:49,353 INFO L85 PathProgramCache]: Analyzing trace with hash 663549096, now seen corresponding path program 1 times [2023-12-02 20:13:49,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:13:49,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85659892] [2023-12-02 20:13:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:13:49,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:13:49,961 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 20:13:49,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814911837] [2023-12-02 20:13:49,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:13:49,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:13:49,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 20:13:49,963 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:13:49,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d187e38-950e-4837-8881-595d34158001/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 20:13:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:13:53,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 16337 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 20:13:53,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:14:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 30721 backedges. 11062 proven. 0 refuted. 0 times theorem prover too weak. 19659 trivial. 0 not checked. [2023-12-02 20:14:00,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:14:00,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:14:00,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85659892] [2023-12-02 20:14:00,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 20:14:00,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814911837] [2023-12-02 20:14:00,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814911837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:14:00,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:14:00,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 20:14:00,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173514108] [2023-12-02 20:14:00,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:14:00,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 20:14:00,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:14:00,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 20:14:00,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 20:14:00,116 INFO L87 Difference]: Start difference. First operand 146306 states and 215295 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 2 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-02 20:14:02,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:04,286 WARN L539 Checker$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 20:14:06,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 20:14:10,604 WARN L539 Checker$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 20:14:18,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:20,877 WARN L539 Checker$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 20:14:22,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:24,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:26,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:28,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:31,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:33,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:35,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:45,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:47,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:49,837 WARN L539 Checker$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 20:14:51,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:54,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:56,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:58,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:15:01,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:15:03,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:15:07,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:15:10,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:15:12,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:15:14,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:15:17,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:15:19,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:15:22,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:15:24,219 WARN L539 Checker$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 20:15:26,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:15:28,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:15:29,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:15:29,941 INFO L93 Difference]: Finished difference Result 437772 states and 644267 transitions. [2023-12-02 20:15:29,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:15:29,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 2 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) Word has length 1298 [2023-12-02 20:15:29,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:15:31,141 INFO L225 Difference]: With dead ends: 437772 [2023-12-02 20:15:31,142 INFO L226 Difference]: Without dead ends: 291627 [2023-12-02 20:15:31,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1297 GetRequests, 1295 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 20:15:31,728 INFO L413 NwaCegarLoop]: 6603 mSDtfsCounter, 3933 mSDsluCounter, 10265 mSDsCounter, 0 mSdLazyCounter, 1641 mSolverCounterSat, 1 mSolverCounterUnsat, 29 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3936 SdHoareTripleChecker+Valid, 16868 SdHoareTripleChecker+Invalid, 1671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1641 IncrementalHoareTripleChecker+Invalid, 29 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.3s IncrementalHoareTripleChecker+Time [2023-12-02 20:15:31,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3936 Valid, 16868 Invalid, 1671 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1641 Invalid, 29 Unknown, 0 Unchecked, 80.3s Time] [2023-12-02 20:15:31,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291627 states. [2023-12-02 20:15:43,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291627 to 291120. [2023-12-02 20:15:44,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291120 states, 191914 states have (on average 1.3928843127650927) internal successors, (267314), 196982 states have internal predecessors, (267314), 80264 states have call successors, (80264), 18966 states have call predecessors, (80264), 18941 states have return successors, (80839), 78875 states have call predecessors, (80839), 80263 states have call successors, (80839)