./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--usb--host--fotg210-hcd.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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8adfafe-6905-4cb2-831a-0bede5ff06d5/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8adfafe-6905-4cb2-831a-0bede5ff06d5/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_e8adfafe-6905-4cb2-831a-0bede5ff06d5/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8adfafe-6905-4cb2-831a-0bede5ff06d5/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--usb--host--fotg210-hcd.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8adfafe-6905-4cb2-831a-0bede5ff06d5/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_e8adfafe-6905-4cb2-831a-0bede5ff06d5/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 6831c80473b3bd102fb10b7b3c65e4c88728eb3739081530d9e505e798afb064 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:57:52,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:57:52,719 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8adfafe-6905-4cb2-831a-0bede5ff06d5/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 14:57:52,724 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:57:52,725 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:57:52,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:57:52,756 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:57:52,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:57:52,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:57:52,759 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:57:52,759 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:57:52,760 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:57:52,761 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:57:52,761 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:57:52,762 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:57:52,763 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:57:52,763 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:57:52,764 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:57:52,765 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:57:52,766 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:57:52,766 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:57:52,771 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:57:52,772 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:57:52,773 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:57:52,773 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:57:52,774 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:57:52,774 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:57:52,775 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:57:52,775 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:57:52,776 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:57:52,776 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:57:52,777 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:57:52,777 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:57:52,777 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:57:52,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:57:52,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:57:52,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:57:52,778 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:57:52,779 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:57:52,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:57:52,779 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:57:52,780 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:57:52,780 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:57:52,780 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:57:52,781 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_e8adfafe-6905-4cb2-831a-0bede5ff06d5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8adfafe-6905-4cb2-831a-0bede5ff06d5/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6831c80473b3bd102fb10b7b3c65e4c88728eb3739081530d9e505e798afb064 [2023-12-02 14:57:53,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:57:53,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:57:53,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:57:53,064 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:57:53,064 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:57:53,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8adfafe-6905-4cb2-831a-0bede5ff06d5/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i [2023-12-02 14:57:56,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:57:56,838 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:57:56,839 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8adfafe-6905-4cb2-831a-0bede5ff06d5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i [2023-12-02 14:57:56,894 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8adfafe-6905-4cb2-831a-0bede5ff06d5/bin/utaipan-verify-nQ1chXbOIh/data/f21981e36/7bff528f6e3b48e09e1b8b5ed8b05efb/FLAG3da522c8b [2023-12-02 14:57:56,911 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8adfafe-6905-4cb2-831a-0bede5ff06d5/bin/utaipan-verify-nQ1chXbOIh/data/f21981e36/7bff528f6e3b48e09e1b8b5ed8b05efb [2023-12-02 14:57:56,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:57:56,915 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:57:56,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:57:56,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:57:56,924 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:57:56,925 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:57:56" (1/1) ... [2023-12-02 14:57:56,926 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@458e51fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:56, skipping insertion in model container [2023-12-02 14:57:56,926 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:57:56" (1/1) ... [2023-12-02 14:57:57,127 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:57:59,919 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_e8adfafe-6905-4cb2-831a-0bede5ff06d5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i[367830,367843] [2023-12-02 14:57:59,970 WARN L638 FunctionHandler]: implicit declaration of function ldv_xmalloc [2023-12-02 14:57:59,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:58:00,014 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:58:00,110 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"); [3937] [2023-12-02 14:58:00,113 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)); [3944] [2023-12-02 14:58:00,114 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)); [3958-3959] [2023-12-02 14:58:00,114 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bsfl %1,%0": "=r" (r): "rm" (x), "0" (-1)); [3967] [2023-12-02 14:58:00,126 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [4294] [2023-12-02 14:58:00,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [4301] [2023-12-02 14:58:00,348 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/9557/dscv_tempdir/dscv/ri/43_2a/drivers/usb/host/fotg210-hcd.c"), "i" (1921), "i" (12UL)); [6504-6505] [2023-12-02 14:58:00,369 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/9557/dscv_tempdir/dscv/ri/43_2a/drivers/usb/host/fotg210-hcd.c"), "i" (2133), "i" (12UL)); [6756-6757] [2023-12-02 14:58:00,386 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [7079] [2023-12-02 14:58:00,390 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7125] [2023-12-02 14:58:00,420 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7677] [2023-12-02 14:58:00,427 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7753] [2023-12-02 14:58:00,443 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7871] [2023-12-02 14:58:00,500 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8390] [2023-12-02 14:58:00,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8475] [2023-12-02 14:58:00,521 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/9557/dscv_tempdir/dscv/ri/43_2a/drivers/usb/host/fotg210-hcd.c"), "i" (4035), "i" (12UL)); [8784-8785] [2023-12-02 14:58:00,551 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [9411] [2023-12-02 14:58:00,567 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [9784] [2023-12-02 14:58:00,570 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [9815] [2023-12-02 14:58:00,585 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/9557/dscv_tempdir/dscv/ri/43_2a/drivers/usb/host/fotg210-hcd.c"), "i" (5180), "i" (12UL)); [10197-10198] [2023-12-02 14:58:00,644 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_e8adfafe-6905-4cb2-831a-0bede5ff06d5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i[367830,367843] [2023-12-02 14:58:00,650 WARN L638 FunctionHandler]: implicit declaration of function ldv_xmalloc [2023-12-02 14:58:00,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:58:00,748 WARN L675 CHandler]: The function ldv_xmalloc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:58:00,748 WARN L675 CHandler]: The function ldv_calloc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:58:00,756 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:58:00,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:00 WrapperNode [2023-12-02 14:58:00,756 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:58:00,758 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:58:00,758 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:58:00,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:58:00,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:00" (1/1) ... [2023-12-02 14:58:00,918 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:00" (1/1) ... [2023-12-02 14:58:01,199 INFO L138 Inliner]: procedures = 335, calls = 4816, calls flagged for inlining = 155, calls inlined = 153, statements flattened = 13509 [2023-12-02 14:58:01,200 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:58:01,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:58:01,200 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:58:01,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:58:01,209 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:00" (1/1) ... [2023-12-02 14:58:01,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:00" (1/1) ... [2023-12-02 14:58:01,347 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:00" (1/1) ... [2023-12-02 14:58:01,347 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:00" (1/1) ... [2023-12-02 14:58:01,624 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:00" (1/1) ... [2023-12-02 14:58:01,662 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:00" (1/1) ... [2023-12-02 14:58:01,709 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:00" (1/1) ... [2023-12-02 14:58:01,731 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:00" (1/1) ... [2023-12-02 14:58:01,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:58:01,863 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:58:01,864 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:58:01,864 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:58:01,865 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:00" (1/1) ... [2023-12-02 14:58:01,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:58:01,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8adfafe-6905-4cb2-831a-0bede5ff06d5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:58:01,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8adfafe-6905-4cb2-831a-0bede5ff06d5/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:58:01,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8adfafe-6905-4cb2-831a-0bede5ff06d5/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:58:01,953 INFO L130 BoogieDeclarations]: Found specification of procedure single_unlink_async [2023-12-02 14:58:01,955 INFO L138 BoogieDeclarations]: Found implementation of procedure single_unlink_async [2023-12-02 14:58:01,957 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_poll_PSS [2023-12-02 14:58:01,957 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_poll_PSS [2023-12-02 14:58:01,958 INFO L130 BoogieDeclarations]: Found specification of procedure end_unlink_async [2023-12-02 14:58:01,958 INFO L138 BoogieDeclarations]: Found implementation of procedure end_unlink_async [2023-12-02 14:58:01,959 INFO L130 BoogieDeclarations]: Found specification of procedure dbg_status_buf [2023-12-02 14:58:01,959 INFO L138 BoogieDeclarations]: Found implementation of procedure dbg_status_buf [2023-12-02 14:58:01,959 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2023-12-02 14:58:01,959 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2023-12-02 14:58:01,959 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_qh_alloc [2023-12-02 14:58:01,960 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_qh_alloc [2023-12-02 14:58:01,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 14:58:01,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 14:58:01,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 14:58:01,960 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 14:58:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_urb_dequeue [2023-12-02 14:58:01,961 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_urb_dequeue [2023-12-02 14:58:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure turn_on_io_watchdog [2023-12-02 14:58:01,961 INFO L138 BoogieDeclarations]: Found implementation of procedure turn_on_io_watchdog [2023-12-02 14:58:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_to_hcd [2023-12-02 14:58:01,961 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_to_hcd [2023-12-02 14:58:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2023-12-02 14:58:01,962 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2023-12-02 14:58:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-12-02 14:58:01,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-12-02 14:58:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 14:58:01,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 14:58:01,963 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpup [2023-12-02 14:58:01,963 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpup [2023-12-02 14:58:01,963 INFO L130 BoogieDeclarations]: Found specification of procedure usb_disabled [2023-12-02 14:58:01,963 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_disabled [2023-12-02 14:58:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure qh_destroy [2023-12-02 14:58:01,964 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_destroy [2023-12-02 14:58:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure end_free_itds [2023-12-02 14:58:01,965 INFO L138 BoogieDeclarations]: Found implementation of procedure end_free_itds [2023-12-02 14:58:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 14:58:01,965 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 14:58:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 14:58:01,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 14:58:01,967 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_hcd_remove [2023-12-02 14:58:01,967 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_hcd_remove [2023-12-02 14:58:01,967 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_next_shadow [2023-12-02 14:58:01,967 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_next_shadow [2023-12-02 14:58:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_poll_ASS [2023-12-02 14:58:01,968 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_poll_ASS [2023-12-02 14:58:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_buffer [2023-12-02 14:58:01,968 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_buffer [2023-12-02 14:58:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_run [2023-12-02 14:58:01,969 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_run [2023-12-02 14:58:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-12-02 14:58:01,970 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-12-02 14:58:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 14:58:01,970 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 14:58:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure start_unlink_intr [2023-12-02 14:58:01,970 INFO L138 BoogieDeclarations]: Found implementation of procedure start_unlink_intr [2023-12-02 14:58:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 14:58:01,971 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 14:58:01,971 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_hub_status_data [2023-12-02 14:58:01,971 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_hub_status_data [2023-12-02 14:58:01,971 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_set_command_bit [2023-12-02 14:58:01,971 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_set_command_bit [2023-12-02 14:58:01,972 INFO L130 BoogieDeclarations]: Found specification of procedure debug_output [2023-12-02 14:58:01,972 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_output [2023-12-02 14:58:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure usb_maxpacket [2023-12-02 14:58:01,973 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_maxpacket [2023-12-02 14:58:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_qtd_init [2023-12-02 14:58:01,973 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_qtd_init [2023-12-02 14:58:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2023-12-02 14:58:01,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2023-12-02 14:58:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_relinquish_port [2023-12-02 14:58:01,974 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_relinquish_port [2023-12-02 14:58:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_to_fotg210 [2023-12-02 14:58:01,974 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_to_fotg210 [2023-12-02 14:58:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_irq [2023-12-02 14:58:01,975 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_irq [2023-12-02 14:58:01,975 INFO L130 BoogieDeclarations]: Found specification of procedure start_free_itds [2023-12-02 14:58:01,975 INFO L138 BoogieDeclarations]: Found implementation of procedure start_free_itds [2023-12-02 14:58:01,975 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_stop [2023-12-02 14:58:01,975 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_stop [2023-12-02 14:58:01,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:58:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 14:58:01,976 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 14:58:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure bus_to_hcd [2023-12-02 14:58:01,977 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_to_hcd [2023-12-02 14:58:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_clear_command_bit [2023-12-02 14:58:01,977 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_clear_command_bit [2023-12-02 14:58:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure qtd_list_free [2023-12-02 14:58:01,978 INFO L138 BoogieDeclarations]: Found implementation of procedure qtd_list_free [2023-12-02 14:58:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 14:58:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-12-02 14:58:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2023-12-02 14:58:01,978 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2023-12-02 14:58:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2023-12-02 14:58:01,979 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2023-12-02 14:58:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2023-12-02 14:58:01,980 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2023-12-02 14:58:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure qtd_fill [2023-12-02 14:58:01,980 INFO L138 BoogieDeclarations]: Found implementation of procedure qtd_fill [2023-12-02 14:58:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-12-02 14:58:01,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-12-02 14:58:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 14:58:01,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 14:58:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 14:58:01,981 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 14:58:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_readl [2023-12-02 14:58:01,982 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_readl [2023-12-02 14:58:01,982 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2023-12-02 14:58:01,982 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2023-12-02 14:58:01,982 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_clear_tt_buffer [2023-12-02 14:58:01,983 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_clear_tt_buffer [2023-12-02 14:58:01,983 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2023-12-02 14:58:01,983 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2023-12-02 14:58:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:58:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 14:58:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_writel [2023-12-02 14:58:01,985 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_writel [2023-12-02 14:58:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure dbg_command_buf [2023-12-02 14:58:01,985 INFO L138 BoogieDeclarations]: Found implementation of procedure dbg_command_buf [2023-12-02 14:58:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 14:58:01,986 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 14:58:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure start_iaa_cycle [2023-12-02 14:58:01,987 INFO L138 BoogieDeclarations]: Found implementation of procedure start_iaa_cycle [2023-12-02 14:58:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_halt [2023-12-02 14:58:01,990 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_halt [2023-12-02 14:58:01,990 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2023-12-02 14:58:01,991 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2023-12-02 14:58:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_hcd_probe [2023-12-02 14:58:01,992 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_hcd_probe [2023-12-02 14:58:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_usecs [2023-12-02 14:58:01,993 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_usecs [2023-12-02 14:58:01,993 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-12-02 14:58:01,994 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-12-02 14:58:02,000 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-12-02 14:58:02,001 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-12-02 14:58:02,001 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_endpoint_disable [2023-12-02 14:58:02,001 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_endpoint_disable [2023-12-02 14:58:02,001 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2023-12-02 14:58:02,002 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2023-12-02 14:58:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 14:58:02,002 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 14:58:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure qh_completions [2023-12-02 14:58:02,002 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_completions [2023-12-02 14:58:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_mem_cleanup [2023-12-02 14:58:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_mem_cleanup [2023-12-02 14:58:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_handle_controller_death [2023-12-02 14:58:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_handle_controller_death [2023-12-02 14:58:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-12-02 14:58:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-12-02 14:58:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure disable_periodic [2023-12-02 14:58:02,004 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_periodic [2023-12-02 14:58:02,004 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_hcd [2023-12-02 14:58:02,004 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_hcd [2023-12-02 14:58:02,004 INFO L130 BoogieDeclarations]: Found specification of procedure enable_periodic [2023-12-02 14:58:02,004 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_periodic [2023-12-02 14:58:02,005 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_port_speed [2023-12-02 14:58:02,005 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_port_speed [2023-12-02 14:58:02,005 INFO L130 BoogieDeclarations]: Found specification of procedure qh_lines [2023-12-02 14:58:02,005 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_lines [2023-12-02 14:58:02,005 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-12-02 14:58:02,006 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-12-02 14:58:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_shutdown [2023-12-02 14:58:02,006 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_shutdown [2023-12-02 14:58:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-12-02 14:58:02,006 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-12-02 14:58:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_handle_intr_unlinks [2023-12-02 14:58:02,006 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_handle_intr_unlinks [2023-12-02 14:58:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-12-02 14:58:02,007 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-12-02 14:58:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_enable_event [2023-12-02 14:58:02,007 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_enable_event [2023-12-02 14:58:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_qtd_free [2023-12-02 14:58:02,007 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_qtd_free [2023-12-02 14:58:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_read_frame_index [2023-12-02 14:58:02,008 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_read_frame_index [2023-12-02 14:58:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_unlink_urb_from_ep [2023-12-02 14:58:02,008 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_unlink_urb_from_ep [2023-12-02 14:58:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 14:58:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_quiesce [2023-12-02 14:58:02,009 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_quiesce [2023-12-02 14:58:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure qh_schedule [2023-12-02 14:58:02,009 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_schedule [2023-12-02 14:58:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_get_frame [2023-12-02 14:58:02,009 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_get_frame [2023-12-02 14:58:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure check_intr_schedule [2023-12-02 14:58:02,010 INFO L138 BoogieDeclarations]: Found implementation of procedure check_intr_schedule [2023-12-02 14:58:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2023-12-02 14:58:02,010 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2023-12-02 14:58:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 14:58:02,010 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 14:58:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-12-02 14:58:02,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-12-02 14:58:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_silence_controller [2023-12-02 14:58:02,011 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_silence_controller [2023-12-02 14:58:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2023-12-02 14:58:02,011 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2023-12-02 14:58:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 14:58:02,012 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 14:58:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_clear_tt_buffer_complete [2023-12-02 14:58:02,012 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_clear_tt_buffer_complete [2023-12-02 14:58:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2023-12-02 14:58:02,012 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2023-12-02 14:58:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-12-02 14:58:02,013 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-12-02 14:58:02,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 14:58:02,013 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-12-02 14:58:02,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-12-02 14:58:02,013 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_endpoint_reset [2023-12-02 14:58:02,013 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_endpoint_reset [2023-12-02 14:58:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_link_urb_to_ep [2023-12-02 14:58:02,014 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_link_urb_to_ep [2023-12-02 14:58:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-12-02 14:58:02,014 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-12-02 14:58:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 14:58:02,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 14:58:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure iso_sched_free [2023-12-02 14:58:02,015 INFO L138 BoogieDeclarations]: Found implementation of procedure iso_sched_free [2023-12-02 14:58:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-12-02 14:58:02,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-12-02 14:58:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 14:58:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2023-12-02 14:58:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_reset [2023-12-02 14:58:02,016 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_reset [2023-12-02 14:58:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-12-02 14:58:02,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-12-02 14:58:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-12-02 14:58:02,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-12-02 14:58:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:58:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure usb_calc_bus_time [2023-12-02 14:58:02,017 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_calc_bus_time [2023-12-02 14:58:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure hrtimer_cancel [2023-12-02 14:58:02,017 INFO L138 BoogieDeclarations]: Found implementation of procedure hrtimer_cancel [2023-12-02 14:58:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure qh_link_async [2023-12-02 14:58:02,018 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_link_async [2023-12-02 14:58:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 14:58:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_qtd_alloc [2023-12-02 14:58:02,018 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_qtd_alloc [2023-12-02 14:58:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_work [2023-12-02 14:58:02,018 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_work [2023-12-02 14:58:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure qh_urb_transaction [2023-12-02 14:58:02,019 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_urb_transaction [2023-12-02 14:58:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-12-02 14:58:02,019 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-12-02 14:58:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-12-02 14:58:02,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-12-02 14:58:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure scnprintf [2023-12-02 14:58:02,020 INFO L138 BoogieDeclarations]: Found implementation of procedure scnprintf [2023-12-02 14:58:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_hub_control [2023-12-02 14:58:02,020 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_hub_control [2023-12-02 14:58:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure check_period [2023-12-02 14:58:02,021 INFO L138 BoogieDeclarations]: Found implementation of procedure check_period [2023-12-02 14:58:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2023-12-02 14:58:02,025 INFO L138 BoogieDeclarations]: Found implementation of procedure default_llseek [2023-12-02 14:58:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure __list_splice [2023-12-02 14:58:02,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_splice [2023-12-02 14:58:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-12-02 14:58:02,026 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-12-02 14:58:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure shadow_next_periodic [2023-12-02 14:58:02,026 INFO L138 BoogieDeclarations]: Found implementation of procedure shadow_next_periodic [2023-12-02 14:58:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-12-02 14:58:02,027 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-12-02 14:58:02,027 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpu [2023-12-02 14:58:02,028 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpu [2023-12-02 14:58:02,028 INFO L130 BoogieDeclarations]: Found specification of procedure handshake [2023-12-02 14:58:02,028 INFO L138 BoogieDeclarations]: Found implementation of procedure handshake [2023-12-02 14:58:02,028 INFO L130 BoogieDeclarations]: Found specification of procedure debug_close [2023-12-02 14:58:02,028 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_close [2023-12-02 14:58:02,028 INFO L130 BoogieDeclarations]: Found specification of procedure qh_refresh [2023-12-02 14:58:02,028 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_refresh [2023-12-02 14:58:02,029 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-12-02 14:58:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-12-02 14:58:02,029 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_urb_enqueue [2023-12-02 14:58:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_urb_enqueue [2023-12-02 14:58:02,029 INFO L130 BoogieDeclarations]: Found specification of procedure start_unlink_async [2023-12-02 14:58:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure start_unlink_async [2023-12-02 14:58:02,030 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-12-02 14:58:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-12-02 14:58:02,030 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_to_hc32 [2023-12-02 14:58:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_to_hc32 [2023-12-02 14:58:02,030 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-12-02 14:58:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-12-02 14:58:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2023-12-02 14:58:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2023-12-02 14:58:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-12-02 14:58:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-12-02 14:58:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-12-02 14:58:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-12-02 14:58:02,032 INFO L130 BoogieDeclarations]: Found specification of procedure qh_append_tds [2023-12-02 14:58:02,032 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_append_tds [2023-12-02 14:58:02,032 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-12-02 14:58:02,032 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-12-02 14:58:02,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:58:02,032 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_fotg210_init [2023-12-02 14:58:02,032 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_fotg210_init [2023-12-02 14:58:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_port_handed_over [2023-12-02 14:58:02,033 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_port_handed_over [2023-12-02 14:58:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_urb_done [2023-12-02 14:58:02,033 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_urb_done [2023-12-02 14:58:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:58:02,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:58:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2023-12-02 14:58:02,034 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2023-12-02 14:58:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-12-02 14:58:02,034 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-12-02 14:58:03,424 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:58:03,430 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:58:04,149 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 14:58:15,825 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_platform_driver_unregister_29_returnLabel#1: havoc ldv_platform_driver_unregister_29_~ldv_func_arg1#1.base, ldv_platform_driver_unregister_29_~ldv_func_arg1#1.offset;havoc ldv_platform_driver_unregister_29_#in~ldv_func_arg1#1.base, ldv_platform_driver_unregister_29_#in~ldv_func_arg1#1.offset;assume { :end_inline_ldv_platform_driver_unregister_29 } true; [2023-12-02 14:58:16,224 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:58:22,458 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:58:22,458 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 14:58:22,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:58:22 BoogieIcfgContainer [2023-12-02 14:58:22,462 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:58:22,465 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:58:22,465 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:58:22,468 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:58:22,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:57:56" (1/3) ... [2023-12-02 14:58:22,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548cfaaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:58:22, skipping insertion in model container [2023-12-02 14:58:22,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:00" (2/3) ... [2023-12-02 14:58:22,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548cfaaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:58:22, skipping insertion in model container [2023-12-02 14:58:22,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:58:22" (3/3) ... [2023-12-02 14:58:22,471 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i [2023-12-02 14:58:22,493 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:58:22,494 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 14:58:22,614 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:58:22,622 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;@54d2d23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:58:22,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 14:58:22,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 3147 states, 1944 states have (on average 1.3251028806584362) internal successors, (2576), 2022 states have internal predecessors, (2576), 1057 states have call successors, (1057), 145 states have call predecessors, (1057), 144 states have return successors, (1049), 1033 states have call predecessors, (1049), 1049 states have call successors, (1049) [2023-12-02 14:58:22,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-02 14:58:22,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:58:22,666 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:58:22,667 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:58:22,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:58:22,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1948296130, now seen corresponding path program 1 times [2023-12-02 14:58:22,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:58:22,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471861223] [2023-12-02 14:58:22,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:58:22,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:58:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:58:24,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2023-12-02 14:58:24,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:58:24,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471861223] [2023-12-02 14:58:24,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471861223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:58:24,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:58:24,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:58:24,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920436818] [2023-12-02 14:58:24,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:58:24,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:58:24,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:58:24,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:58:24,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:58:24,246 INFO L87 Difference]: Start difference. First operand has 3147 states, 1944 states have (on average 1.3251028806584362) internal successors, (2576), 2022 states have internal predecessors, (2576), 1057 states have call successors, (1057), 145 states have call predecessors, (1057), 144 states have return successors, (1049), 1033 states have call predecessors, (1049), 1049 states have call successors, (1049) Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-02 14:58:26,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:58:30,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:58:30,692 INFO L93 Difference]: Finished difference Result 9294 states and 13906 transitions. [2023-12-02 14:58:30,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:58:30,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 296 [2023-12-02 14:58:30,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:58:30,750 INFO L225 Difference]: With dead ends: 9294 [2023-12-02 14:58:30,750 INFO L226 Difference]: Without dead ends: 6151 [2023-12-02 14:58:30,773 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 14:58:30,776 INFO L413 NwaCegarLoop]: 4213 mSDtfsCounter, 4635 mSDsluCounter, 4115 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4635 SdHoareTripleChecker+Valid, 8328 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:58:30,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4635 Valid, 8328 Invalid, 942 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 939 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2023-12-02 14:58:30,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6151 states. [2023-12-02 14:58:31,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6151 to 6146. [2023-12-02 14:58:31,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6146 states, 3813 states have (on average 1.3207448203514294) internal successors, (5036), 3949 states have internal predecessors, (5036), 2049 states have call successors, (2049), 284 states have call predecessors, (2049), 283 states have return successors, (2047), 2014 states have call predecessors, (2047), 2047 states have call successors, (2047) [2023-12-02 14:58:31,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6146 states to 6146 states and 9132 transitions. [2023-12-02 14:58:31,220 INFO L78 Accepts]: Start accepts. Automaton has 6146 states and 9132 transitions. Word has length 296 [2023-12-02 14:58:31,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:58:31,222 INFO L495 AbstractCegarLoop]: Abstraction has 6146 states and 9132 transitions. [2023-12-02 14:58:31,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-02 14:58:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 6146 states and 9132 transitions. [2023-12-02 14:58:31,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-12-02 14:58:31,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:58:31,230 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:58:31,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:58:31,230 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:58:31,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:58:31,231 INFO L85 PathProgramCache]: Analyzing trace with hash -644269824, now seen corresponding path program 1 times [2023-12-02 14:58:31,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:58:31,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826543467] [2023-12-02 14:58:31,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:58:31,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:58:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:58:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2023-12-02 14:58:31,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:58:31,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826543467] [2023-12-02 14:58:31,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826543467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:58:31,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:58:31,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:58:31,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868682025] [2023-12-02 14:58:31,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:58:31,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:58:31,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:58:31,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:58:31,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:58:31,821 INFO L87 Difference]: Start difference. First operand 6146 states and 9132 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-02 14:58:33,873 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 14:58:38,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:58:38,793 INFO L93 Difference]: Finished difference Result 18269 states and 27141 transitions. [2023-12-02 14:58:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:58:38,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 297 [2023-12-02 14:58:38,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:58:38,947 INFO L225 Difference]: With dead ends: 18269 [2023-12-02 14:58:38,947 INFO L226 Difference]: Without dead ends: 12184 [2023-12-02 14:58:39,009 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 14:58:39,011 INFO L413 NwaCegarLoop]: 4198 mSDtfsCounter, 4582 mSDsluCounter, 4070 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4582 SdHoareTripleChecker+Valid, 8268 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:58:39,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4582 Valid, 8268 Invalid, 937 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 934 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2023-12-02 14:58:39,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12184 states. [2023-12-02 14:58:40,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12184 to 12178. [2023-12-02 14:58:40,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12178 states, 7559 states have (on average 1.32120650879746) internal successors, (9987), 7831 states have internal predecessors, (9987), 4053 states have call successors, (4053), 566 states have call predecessors, (4053), 565 states have return successors, (4051), 3984 states have call predecessors, (4051), 4051 states have call successors, (4051) [2023-12-02 14:58:40,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12178 states to 12178 states and 18091 transitions. [2023-12-02 14:58:40,292 INFO L78 Accepts]: Start accepts. Automaton has 12178 states and 18091 transitions. Word has length 297 [2023-12-02 14:58:40,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:58:40,294 INFO L495 AbstractCegarLoop]: Abstraction has 12178 states and 18091 transitions. [2023-12-02 14:58:40,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-02 14:58:40,295 INFO L276 IsEmpty]: Start isEmpty. Operand 12178 states and 18091 transitions. [2023-12-02 14:58:40,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-02 14:58:40,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:58:40,304 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:58:40,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 14:58:40,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:58:40,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:58:40,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1336406408, now seen corresponding path program 1 times [2023-12-02 14:58:40,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:58:40,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578459405] [2023-12-02 14:58:40,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:58:40,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:58:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:58:41,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2023-12-02 14:58:41,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:58:41,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578459405] [2023-12-02 14:58:41,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578459405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:58:41,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:58:41,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:58:41,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128502729] [2023-12-02 14:58:41,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:58:41,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:58:41,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:58:41,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:58:41,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:58:41,317 INFO L87 Difference]: Start difference. First operand 12178 states and 18091 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-02 14:58:43,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:58:47,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:58:47,950 INFO L93 Difference]: Finished difference Result 35977 states and 53418 transitions. [2023-12-02 14:58:47,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:58:47,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 302 [2023-12-02 14:58:47,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:58:48,093 INFO L225 Difference]: With dead ends: 35977 [2023-12-02 14:58:48,093 INFO L226 Difference]: Without dead ends: 23860 [2023-12-02 14:58:48,156 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 14:58:48,157 INFO L413 NwaCegarLoop]: 4656 mSDtfsCounter, 4556 mSDsluCounter, 4069 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4556 SdHoareTripleChecker+Valid, 8725 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:58:48,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4556 Valid, 8725 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 985 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2023-12-02 14:58:48,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23860 states. [2023-12-02 14:58:49,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23860 to 23856. [2023-12-02 14:58:49,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23856 states, 14816 states have (on average 1.3212068034557236) internal successors, (19575), 15342 states have internal predecessors, (19575), 7918 states have call successors, (7918), 1122 states have call predecessors, (7918), 1121 states have return successors, (7916), 7792 states have call predecessors, (7916), 7916 states have call successors, (7916) [2023-12-02 14:58:49,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23856 states to 23856 states and 35409 transitions. [2023-12-02 14:58:49,832 INFO L78 Accepts]: Start accepts. Automaton has 23856 states and 35409 transitions. Word has length 302 [2023-12-02 14:58:49,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:58:49,833 INFO L495 AbstractCegarLoop]: Abstraction has 23856 states and 35409 transitions. [2023-12-02 14:58:49,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-02 14:58:49,834 INFO L276 IsEmpty]: Start isEmpty. Operand 23856 states and 35409 transitions. [2023-12-02 14:58:49,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-02 14:58:49,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:58:49,846 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:58:49,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 14:58:49,846 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:58:49,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:58:49,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1380918159, now seen corresponding path program 1 times [2023-12-02 14:58:49,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:58:49,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842719065] [2023-12-02 14:58:49,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:58:49,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:58:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:58:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2023-12-02 14:58:50,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:58:50,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842719065] [2023-12-02 14:58:50,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842719065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:58:50,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:58:50,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:58:50,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362587211] [2023-12-02 14:58:50,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:58:50,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:58:50,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:58:50,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:58:50,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:58:50,579 INFO L87 Difference]: Start difference. First operand 23856 states and 35409 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-02 14:58:52,650 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 14:58:57,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:58:57,770 INFO L93 Difference]: Finished difference Result 61172 states and 90091 transitions. [2023-12-02 14:58:57,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:58:57,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 328 [2023-12-02 14:58:57,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:58:57,939 INFO L225 Difference]: With dead ends: 61172 [2023-12-02 14:58:57,940 INFO L226 Difference]: Without dead ends: 37377 [2023-12-02 14:58:58,015 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 14:58:58,017 INFO L413 NwaCegarLoop]: 5794 mSDtfsCounter, 2777 mSDsluCounter, 3962 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2777 SdHoareTripleChecker+Valid, 9756 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:58:58,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2777 Valid, 9756 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1244 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2023-12-02 14:58:58,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37377 states. [2023-12-02 14:59:00,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37377 to 37369. [2023-12-02 14:59:00,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37369 states, 23223 states have (on average 1.3131808982474271) internal successors, (30496), 24041 states have internal predecessors, (30496), 12131 states have call successors, (12131), 2015 states have call predecessors, (12131), 2014 states have return successors, (12129), 11924 states have call predecessors, (12129), 12129 states have call successors, (12129) [2023-12-02 14:59:00,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37369 states to 37369 states and 54756 transitions. [2023-12-02 14:59:00,541 INFO L78 Accepts]: Start accepts. Automaton has 37369 states and 54756 transitions. Word has length 328 [2023-12-02 14:59:00,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:00,542 INFO L495 AbstractCegarLoop]: Abstraction has 37369 states and 54756 transitions. [2023-12-02 14:59:00,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-02 14:59:00,543 INFO L276 IsEmpty]: Start isEmpty. Operand 37369 states and 54756 transitions. [2023-12-02 14:59:00,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2023-12-02 14:59:00,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:00,558 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 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] [2023-12-02 14:59:00,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 14:59:00,559 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:59:00,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:00,559 INFO L85 PathProgramCache]: Analyzing trace with hash 441092221, now seen corresponding path program 1 times [2023-12-02 14:59:00,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:59:00,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111643930] [2023-12-02 14:59:00,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:00,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:59:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:01,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3171 trivial. 0 not checked. [2023-12-02 14:59:01,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:59:01,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111643930] [2023-12-02 14:59:01,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111643930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:59:01,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:59:01,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:59:01,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759201434] [2023-12-02 14:59:01,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:59:01,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:59:01,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:59:01,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:59:01,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:59:01,681 INFO L87 Difference]: Start difference. First operand 37369 states and 54756 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 14:59:03,764 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 14:59:05,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:59:07,775 WARN L539 Checker$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 14:59:12,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:12,333 INFO L93 Difference]: Finished difference Result 74725 states and 109487 transitions. [2023-12-02 14:59:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:59:12,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 445 [2023-12-02 14:59:12,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:12,473 INFO L225 Difference]: With dead ends: 74725 [2023-12-02 14:59:12,473 INFO L226 Difference]: Without dead ends: 37369 [2023-12-02 14:59:12,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:59:12,583 INFO L413 NwaCegarLoop]: 4167 mSDtfsCounter, 3 mSDsluCounter, 8329 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12496 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:12,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12496 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1393 Invalid, 3 Unknown, 0 Unchecked, 9.4s Time] [2023-12-02 14:59:12,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37369 states. [2023-12-02 14:59:14,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37369 to 37369. [2023-12-02 14:59:14,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37369 states, 23223 states have (on average 1.3124919261077381) internal successors, (30480), 24041 states have internal predecessors, (30480), 12131 states have call successors, (12131), 2015 states have call predecessors, (12131), 2014 states have return successors, (12129), 11924 states have call predecessors, (12129), 12129 states have call successors, (12129) [2023-12-02 14:59:14,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37369 states to 37369 states and 54740 transitions. [2023-12-02 14:59:14,346 INFO L78 Accepts]: Start accepts. Automaton has 37369 states and 54740 transitions. Word has length 445 [2023-12-02 14:59:14,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:14,346 INFO L495 AbstractCegarLoop]: Abstraction has 37369 states and 54740 transitions. [2023-12-02 14:59:14,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 14:59:14,347 INFO L276 IsEmpty]: Start isEmpty. Operand 37369 states and 54740 transitions. [2023-12-02 14:59:14,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-02 14:59:14,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:14,352 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:59:14,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 14:59:14,353 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:59:14,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:14,353 INFO L85 PathProgramCache]: Analyzing trace with hash 795743755, now seen corresponding path program 1 times [2023-12-02 14:59:14,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:59:14,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108694225] [2023-12-02 14:59:14,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:14,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:59:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:15,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1661 trivial. 0 not checked. [2023-12-02 14:59:15,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:59:15,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108694225] [2023-12-02 14:59:15,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108694225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:59:15,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:59:15,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:59:15,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148934318] [2023-12-02 14:59:15,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:59:15,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:59:15,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:59:15,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:59:15,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:15,410 INFO L87 Difference]: Start difference. First operand 37369 states and 54740 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-02 14:59:17,468 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 14:59:23,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:23,616 INFO L93 Difference]: Finished difference Result 111153 states and 162879 transitions. [2023-12-02 14:59:23,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:59:23,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 458 [2023-12-02 14:59:23,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:23,957 INFO L225 Difference]: With dead ends: 111153 [2023-12-02 14:59:23,957 INFO L226 Difference]: Without dead ends: 73845 [2023-12-02 14:59:24,073 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 14:59:24,074 INFO L413 NwaCegarLoop]: 4720 mSDtfsCounter, 4592 mSDsluCounter, 4074 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4592 SdHoareTripleChecker+Valid, 8794 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:24,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4592 Valid, 8794 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 982 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2023-12-02 14:59:24,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73845 states. [2023-12-02 14:59:28,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73845 to 73841. [2023-12-02 14:59:28,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73841 states, 45892 states have (on average 1.312581713588425) internal successors, (60237), 47525 states have internal predecessors, (60237), 23987 states have call successors, (23987), 3962 states have call predecessors, (23987), 3961 states have return successors, (23985), 23575 states have call predecessors, (23985), 23985 states have call successors, (23985) [2023-12-02 14:59:28,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73841 states to 73841 states and 108209 transitions. [2023-12-02 14:59:28,635 INFO L78 Accepts]: Start accepts. Automaton has 73841 states and 108209 transitions. Word has length 458 [2023-12-02 14:59:28,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:28,636 INFO L495 AbstractCegarLoop]: Abstraction has 73841 states and 108209 transitions. [2023-12-02 14:59:28,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-02 14:59:28,636 INFO L276 IsEmpty]: Start isEmpty. Operand 73841 states and 108209 transitions. [2023-12-02 14:59:28,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-12-02 14:59:28,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:28,645 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 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] [2023-12-02 14:59:28,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 14:59:28,645 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:59:28,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:28,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1482321165, now seen corresponding path program 1 times [2023-12-02 14:59:28,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:59:28,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307002763] [2023-12-02 14:59:28,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:28,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:59:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3175 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3173 trivial. 0 not checked. [2023-12-02 14:59:29,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:59:29,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307002763] [2023-12-02 14:59:29,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307002763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:59:29,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:59:29,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:59:29,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420786553] [2023-12-02 14:59:29,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:59:29,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:59:29,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:59:29,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:59:29,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:29,715 INFO L87 Difference]: Start difference. First operand 73841 states and 108209 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2023-12-02 14:59:32,620 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 14:59:40,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:40,973 INFO L93 Difference]: Finished difference Result 182764 states and 267849 transitions. [2023-12-02 14:59:40,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:59:40,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 481 [2023-12-02 14:59:40,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:41,657 INFO L225 Difference]: With dead ends: 182764 [2023-12-02 14:59:41,657 INFO L226 Difference]: Without dead ends: 108995 [2023-12-02 14:59:41,869 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 14:59:41,871 INFO L413 NwaCegarLoop]: 5264 mSDtfsCounter, 4515 mSDsluCounter, 4147 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4515 SdHoareTripleChecker+Valid, 9411 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:41,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4515 Valid, 9411 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1074 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2023-12-02 14:59:41,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108995 states. [2023-12-02 14:59:46,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108995 to 108989. [2023-12-02 14:59:46,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108989 states, 67785 states have (on average 1.3124290034668438) internal successors, (88963), 70180 states have internal predecessors, (88963), 35347 states have call successors, (35347), 5857 states have call predecessors, (35347), 5856 states have return successors, (35345), 34747 states have call predecessors, (35345), 35345 states have call successors, (35345) [2023-12-02 14:59:47,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108989 states to 108989 states and 159655 transitions. [2023-12-02 14:59:47,523 INFO L78 Accepts]: Start accepts. Automaton has 108989 states and 159655 transitions. Word has length 481 [2023-12-02 14:59:47,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:47,524 INFO L495 AbstractCegarLoop]: Abstraction has 108989 states and 159655 transitions. [2023-12-02 14:59:47,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2023-12-02 14:59:47,525 INFO L276 IsEmpty]: Start isEmpty. Operand 108989 states and 159655 transitions. [2023-12-02 14:59:47,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-12-02 14:59:47,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:47,530 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 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] [2023-12-02 14:59:47,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 14:59:47,530 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:59:47,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:47,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1669316079, now seen corresponding path program 1 times [2023-12-02 14:59:47,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:59:47,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670094501] [2023-12-02 14:59:47,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:47,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:59:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:48,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3176 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3173 trivial. 0 not checked. [2023-12-02 14:59:48,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:59:48,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670094501] [2023-12-02 14:59:48,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670094501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:59:48,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:59:48,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:59:48,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563640084] [2023-12-02 14:59:48,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:59:48,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:59:48,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:59:48,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:59:48,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:48,541 INFO L87 Difference]: Start difference. First operand 108989 states and 159655 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2023-12-02 14:59:50,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:00:00,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:00:00,761 INFO L93 Difference]: Finished difference Result 268884 states and 393897 transitions. [2023-12-02 15:00:00,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:00:00,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 482 [2023-12-02 15:00:00,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:00:01,717 INFO L225 Difference]: With dead ends: 268884 [2023-12-02 15:00:01,717 INFO L226 Difference]: Without dead ends: 159967 [2023-12-02 15:00:02,057 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 15:00:02,057 INFO L413 NwaCegarLoop]: 5238 mSDtfsCounter, 4510 mSDsluCounter, 4142 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4510 SdHoareTripleChecker+Valid, 9380 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:00:02,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4510 Valid, 9380 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-02 15:00:02,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159967 states. [2023-12-02 15:00:10,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159967 to 159957. [2023-12-02 15:00:10,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159957 states, 99561 states have (on average 1.3122909573025583) internal successors, (130653), 103044 states have internal predecessors, (130653), 51781 states have call successors, (51781), 8615 states have call predecessors, (51781), 8614 states have return successors, (51779), 50917 states have call predecessors, (51779), 51779 states have call successors, (51779) [2023-12-02 15:00:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159957 states to 159957 states and 234213 transitions. [2023-12-02 15:00:11,578 INFO L78 Accepts]: Start accepts. Automaton has 159957 states and 234213 transitions. Word has length 482 [2023-12-02 15:00:11,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:00:11,579 INFO L495 AbstractCegarLoop]: Abstraction has 159957 states and 234213 transitions. [2023-12-02 15:00:11,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2023-12-02 15:00:11,579 INFO L276 IsEmpty]: Start isEmpty. Operand 159957 states and 234213 transitions. [2023-12-02 15:00:11,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2023-12-02 15:00:11,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:00:11,587 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 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] [2023-12-02 15:00:11,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 15:00:11,588 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:00:11,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:00:11,588 INFO L85 PathProgramCache]: Analyzing trace with hash -656014006, now seen corresponding path program 1 times [2023-12-02 15:00:11,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:00:11,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454388783] [2023-12-02 15:00:11,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:11,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:00:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:00:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3175 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3175 trivial. 0 not checked. [2023-12-02 15:00:13,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:00:13,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454388783] [2023-12-02 15:00:13,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454388783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:00:13,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:00:13,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:00:13,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904656216] [2023-12-02 15:00:13,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:00:13,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:00:13,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:00:13,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:00:13,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:00:13,555 INFO L87 Difference]: Start difference. First operand 159957 states and 234213 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2023-12-02 15:00:15,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:00:17,656 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 15:00:30,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:00:30,045 INFO L93 Difference]: Finished difference Result 215660 states and 314547 transitions. [2023-12-02 15:00:30,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:00:30,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 485 [2023-12-02 15:00:30,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:00:31,110 INFO L225 Difference]: With dead ends: 215660 [2023-12-02 15:00:31,110 INFO L226 Difference]: Without dead ends: 215656 [2023-12-02 15:00:31,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:00:31,202 INFO L413 NwaCegarLoop]: 5294 mSDtfsCounter, 2960 mSDsluCounter, 7985 mSDsCounter, 0 mSdLazyCounter, 1562 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2960 SdHoareTripleChecker+Valid, 13279 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1562 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:00:31,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2960 Valid, 13279 Invalid, 1566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1562 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2023-12-02 15:00:31,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215656 states. [2023-12-02 15:00:40,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215656 to 214760. [2023-12-02 15:00:40,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214760 states, 134305 states have (on average 1.317136368713004) internal successors, (176898), 140027 states have internal predecessors, (176898), 67640 states have call successors, (67640), 12983 states have call predecessors, (67640), 12814 states have return successors, (68591), 65825 states have call predecessors, (68591), 67639 states have call successors, (68591) [2023-12-02 15:00:42,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214760 states to 214760 states and 313129 transitions. [2023-12-02 15:00:42,213 INFO L78 Accepts]: Start accepts. Automaton has 214760 states and 313129 transitions. Word has length 485 [2023-12-02 15:00:42,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:00:42,214 INFO L495 AbstractCegarLoop]: Abstraction has 214760 states and 313129 transitions. [2023-12-02 15:00:42,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2023-12-02 15:00:42,214 INFO L276 IsEmpty]: Start isEmpty. Operand 214760 states and 313129 transitions. [2023-12-02 15:00:42,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-12-02 15:00:42,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:00:42,244 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 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] [2023-12-02 15:00:42,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 15:00:42,245 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:00:42,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:00:42,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1516610412, now seen corresponding path program 1 times [2023-12-02 15:00:42,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:00:42,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956021275] [2023-12-02 15:00:42,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:42,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:00:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:00:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3180 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3175 trivial. 0 not checked. [2023-12-02 15:00:42,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:00:42,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956021275] [2023-12-02 15:00:42,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956021275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:00:42,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:00:42,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:00:42,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419677088] [2023-12-02 15:00:42,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:00:42,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:00:42,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:00:42,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:00:42,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:00:42,883 INFO L87 Difference]: Start difference. First operand 214760 states and 313129 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2023-12-02 15:00:45,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:00:47,085 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 15:01:06,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:01:06,072 INFO L93 Difference]: Finished difference Result 560199 states and 818252 transitions. [2023-12-02 15:01:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:01:06,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 522 [2023-12-02 15:01:06,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:01:08,235 INFO L225 Difference]: With dead ends: 560199 [2023-12-02 15:01:08,235 INFO L226 Difference]: Without dead ends: 345511 [2023-12-02 15:01:09,217 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 15:01:09,218 INFO L413 NwaCegarLoop]: 4733 mSDtfsCounter, 4363 mSDsluCounter, 3995 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 67 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4363 SdHoareTripleChecker+Valid, 8728 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:01:09,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4363 Valid, 8728 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1138 Invalid, 2 Unknown, 0 Unchecked, 9.3s Time] [2023-12-02 15:01:09,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345511 states. [2023-12-02 15:01:26,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345511 to 345490. [2023-12-02 15:01:26,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345490 states, 216291 states have (on average 1.3144328705309052) internal successors, (284300), 225439 states have internal predecessors, (284300), 109000 states have call successors, (109000), 20451 states have call predecessors, (109000), 20198 states have return successors, (110427), 106171 states have call predecessors, (110427), 108999 states have call successors, (110427) [2023-12-02 15:01:29,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345490 states to 345490 states and 503727 transitions. [2023-12-02 15:01:29,359 INFO L78 Accepts]: Start accepts. Automaton has 345490 states and 503727 transitions. Word has length 522 [2023-12-02 15:01:29,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:01:29,360 INFO L495 AbstractCegarLoop]: Abstraction has 345490 states and 503727 transitions. [2023-12-02 15:01:29,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2023-12-02 15:01:29,360 INFO L276 IsEmpty]: Start isEmpty. Operand 345490 states and 503727 transitions. [2023-12-02 15:01:29,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-02 15:01:29,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:01:29,384 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 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] [2023-12-02 15:01:29,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 15:01:29,385 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:01:29,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:01:29,385 INFO L85 PathProgramCache]: Analyzing trace with hash -2085529392, now seen corresponding path program 1 times [2023-12-02 15:01:29,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:01:29,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068626631] [2023-12-02 15:01:29,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:01:29,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:01:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:01:29,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3180 trivial. 0 not checked. [2023-12-02 15:01:29,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:01:29,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068626631] [2023-12-02 15:01:29,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068626631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:01:29,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:01:29,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:01:29,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356215025] [2023-12-02 15:01:29,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:01:29,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:01:29,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:01:29,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:01:29,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:01:29,966 INFO L87 Difference]: Start difference. First operand 345490 states and 503727 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-02 15:01:32,019 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 15:01:34,028 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 15:01:51,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:01:51,942 INFO L93 Difference]: Finished difference Result 668084 states and 971966 transitions. [2023-12-02 15:01:51,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:01:51,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 521 [2023-12-02 15:01:51,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:01:53,949 INFO L225 Difference]: With dead ends: 668084 [2023-12-02 15:01:53,950 INFO L226 Difference]: Without dead ends: 322666 [2023-12-02 15:01:55,272 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 15:01:55,272 INFO L413 NwaCegarLoop]: 3708 mSDtfsCounter, 29 mSDsluCounter, 3660 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 7368 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:01:55,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 7368 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 858 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2023-12-02 15:01:55,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322666 states. [2023-12-02 15:02:10,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322666 to 322594. [2023-12-02 15:02:10,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322594 states, 202323 states have (on average 1.3158563287416656) internal successors, (266228), 211039 states have internal predecessors, (266228), 100216 states have call successors, (100216), 20307 states have call predecessors, (100216), 20054 states have return successors, (101643), 97387 states have call predecessors, (101643), 100215 states have call successors, (101643) [2023-12-02 15:02:12,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322594 states to 322594 states and 468087 transitions. [2023-12-02 15:02:12,818 INFO L78 Accepts]: Start accepts. Automaton has 322594 states and 468087 transitions. Word has length 521 [2023-12-02 15:02:12,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:02:12,819 INFO L495 AbstractCegarLoop]: Abstraction has 322594 states and 468087 transitions. [2023-12-02 15:02:12,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-02 15:02:12,820 INFO L276 IsEmpty]: Start isEmpty. Operand 322594 states and 468087 transitions. [2023-12-02 15:02:13,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2023-12-02 15:02:13,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:02:13,070 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:02:13,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 15:02:13,070 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:02:13,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:02:13,071 INFO L85 PathProgramCache]: Analyzing trace with hash 442906606, now seen corresponding path program 1 times [2023-12-02 15:02:13,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:02:13,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082242245] [2023-12-02 15:02:13,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:02:13,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:02:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:02:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3206 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3199 trivial. 0 not checked. [2023-12-02 15:02:14,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:02:14,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082242245] [2023-12-02 15:02:14,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082242245] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:02:14,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:02:14,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:02:14,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283355774] [2023-12-02 15:02:14,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:02:14,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:02:14,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:02:14,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:02:14,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:02:14,840 INFO L87 Difference]: Start difference. First operand 322594 states and 468087 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 3 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2023-12-02 15:02:16,916 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 15:02:18,922 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 []